Startup Lessons from the OFM Space: A Harpoon Post-Mortem

We built a product called Harpoon for the OnlyFans industry. It worked well—we had a 90%+ success rate at delivering 5x ROI for our clients. But we still shut it down.

This is the story of what we got right, what we got catastrophically wrong, and the hard-earned lessons that every entrepreneur in the OFM space needs to understand before they build their next product.

What Harpoon Was

Before diving into the lessons, let me quickly explain what Harpoon actually did. It was a data-driven optimization tool designed specifically for OnlyFans models with strong organic social presence and VIP paid pages. The product focused on identifying high-value subscribers and optimizing pricing strategies to maximize revenue per user.

We set a lofty but achievable goal—deliver 5x ROI for all clients—and managed to hit that target for over 90% of our customers. From a pure product performance standpoint, Harpoon was a success. But as anyone who's been in startups knows, building a product that works is only half the battle.

The Biggest Challenge: Customer Education

The single biggest lesson we learned was that customer education for novel products is absolutely critical and exponentially more difficult than you think.

It's very difficult to educate someone on a product that has never existed before. I thought people would intuitively understand the value of Harpoon, but we quickly discovered we had to sell the PROBLEM in addition to the solution.

This is a common trap for technical founders. You build something because you see an obvious inefficiency in the market, but you forget that most people in that market don't even realize the inefficiency exists. They've been doing things the same way for so long that they can't imagine a better approach.

The Personal Touch Problem

We paid a lot of attention to the education piece, creating detailed explanations, case studies, and demos. But despite all this effort, I don't think we made a single sale that didn't involve me having at least a text message exchange with a prospect. Not one.

This is fine for startups, especially high-ticket B2B products—the founder being heavily involved in sales is normal and often necessary. The problem is that to scale beyond a certain point, we probably would have had to build a dedicated sales team, which significantly changes the unit economics and complexity of the business.

In hindsight, this should have been a massive red flag about product-market fit. If a product truly solves an urgent problem for its target market, customers should be pulling it out of your hands, not requiring extensive personal persuasion to understand why they need it.

Technical Lessons Learned

Building in the OnlyFans space presents unique technical challenges that most startup founders never have to consider.

Financial Infrastructure Is Fragile

One of the most painful lessons was around financial infrastructure. The adult industry has a long history of being deplatformed, and we experienced this firsthand when we got cancelled by our email service provider (ESP) with minimal warning.

This taught us that not owning your delivery infrastructure is a huge risk in this space. When you're building products for adult content creators, traditional SaaS tools and services will drop you the moment they realize what you do. You need to plan for this from day one, not scramble to find alternatives after you've already been cancelled.

Automation Tools Are Double-Edged

We learned early on that automation tools like Zapier and Make.com could help us speedrun the development process, allowing us to build complex workflows without extensive custom coding. This was invaluable for getting to market quickly and iterating on features.

However, automation tools also created their own problems. When something broke, it was often difficult to diagnose exactly where the issue occurred, especially when multiple automation tools were chained together. This led to longer resolution times and more frustrated customers.

JavaScript and Large Datasets Don't Always Play Nice

On the technical side, we discovered that JavaScript has significant limitations when handling large datasets—a problem when you're processing thousands of subscriber records and transaction histories. This forced us to rebuild several core components in different technologies, adding months to our development timeline.

The lesson here is to thoroughly stress-test your technical architecture with realistic data volumes before committing to a particular technology stack.

Market Fit Insights

One crucial insight we gained was that the product wasn't for everyone. Not all models were viable candidates for Harpoon. The product really shined for models with a strong organic social presence and VIP paid pages, as opposed to models using black hat traffic methods, horizontally scaling operations, or free pages.

This market segmentation insight actually made the product more valuable for the right customers, but it also significantly reduced our total addressable market. We probably should have identified this earlier and positioned the product more specifically from the beginning.

Understanding your ideal customer profile is always important, but it's especially critical in the OnlyFans space where different creators have radically different business models, audience types, and optimization needs.

What We Got Right

Despite ultimately shutting down Harpoon, we did several things correctly that other OFM entrepreneurs should emulate.

Problem Identification

We legitimately solved a real problem. The data optimization challenges we addressed were costing our target customers significant revenue, and our solution delivered measurable results. This is the foundation of any successful product.

Clear Success Metrics

Setting a specific, measurable goal—5x ROI for all clients—gave us a clear benchmark for success and helped build trust with potential customers. Having a concrete guarantee also differentiated us from other service providers who made vague promises about "growth" and "optimization."

Customer Selectivity

Being selective about the clients we took on was crucial. By turning away customers who weren't good fits, we maintained our success rate and avoided the reputation damage that comes from taking on unwinnable accounts.

This is counterintuitive for many entrepreneurs who feel pressure to take every paying customer, but in specialized markets like OnlyFans, being choosy about your customers often leads to better outcomes for everyone involved.

What We Got Catastrophically Wrong

The mistakes we made were more impactful than our successes, which is why they're worth examining in detail.

Onboarding Was A Nightmare

The connection between paying the invoice, signing the NDA, and actual onboarding was tedious, manual, and created unnecessary friction. What should have been a smooth, automated process instead required multiple touchpoints and often took weeks to complete.

In a market where customers are used to instant gratification and seamless digital experiences, this clunky onboarding process cost us customers and created negative first impressions that were difficult to overcome.

Over-Involvement in Customer Service

I was way too personally involved in customer service. Every support ticket, feature request, and billing question came to me directly. This created a massive bottleneck and prevented the business from scaling effectively.

We should have made an early hire for a hybrid customer success/sales role—essentially an account manager who could handle the routine interactions while escalating only the most complex issues. This would have freed me up to focus on product development and strategic growth.

Communication and Process Failures

This was my first time having a business partner, and we struggled with siloing and miscommunication that led to large technical issues. We'd both work on related problems without coordinating, leading to conflicting solutions and wasted effort.

Additionally, our SOPs were substandard. I was used to keeping everything in my head, which worked when I was a solo operator but became a major liability when trying to scale a team. Proper documentation and processes are essential for any business that wants to grow beyond its founder.

Sales Process Optimization

We overestimated the ease of sales and didn't develop a streamlined sales process early enough. Each sale required extensive custom work to understand the prospect's needs, explain the value proposition, and navigate their specific concerns.

A more standardized sales process with clear qualification criteria, standardized demos, and predictable pricing would have made scaling much easier.

The Pricing Challenge

Pricing was one of our most fascinating challenges. The ideal pricing model for a product like Harpoon would probably be percentage-based—taking a small cut of the additional revenue we generated for customers. This aligns incentives perfectly and makes the value proposition extremely clear.

However, percentage-based pricing was really difficult to implement from both a technical and contractual standpoint. We needed access to revenue data, clear attribution methods, and complex legal agreements. So we went with tiered pricing instead.

Pricing is a unique challenge for all businesses, but it's especially difficult for ones with no competitors or market history. For the most part, our pricing decisions were based on ROI targets, which I think is a good starting point, but we probably could have been more sophisticated in our approach.

The Data Goldmine We Didn't Mine

One of our biggest missed opportunities was around data monetization. We collected massive amounts of raw data on subscriber behavior, spending patterns, and optimization results, but we weren't sure what would and wouldn't prove valuable.

Had we continued operating, we probably would have figured out a way to productize the data itself, offering data-driven insights to customers beyond just the raw optimization results. Anonymous, aggregated data about OnlyFans subscriber behavior would be incredibly valuable to agencies, creators, and other service providers in the space.

This represents a broader lesson about looking for value in the byproducts of your core business. Sometimes the most profitable opportunities are hiding in the data and insights you generate while solving your customers' primary problems.

Lessons for Future OFM Entrepreneurs

If you're thinking about building a product or service for the OnlyFans industry, here are the key lessons you should internalize:

Financial Infrastructure Matters

Plan for deplatforming from day one. Use adult-friendly payment processors, email services, and hosting providers. Build relationships with service providers who understand the industry rather than trying to fly under the radar with mainstream providers.

Customer Education Is Everything

If you're building something novel, budget significantly more time and money for customer education than you think you need. Consider building free educational content, hosting webinars, and creating extensive documentation before you even launch the product.

Narrow Your Focus Early

The OnlyFans ecosystem is incredibly diverse. A solution that works for one type of creator may be useless for another. Identify your ideal customer profile as specifically as possible and build exclusively for them, at least initially.

Automate Everything You Can

But own the critical infrastructure. Use automation tools to move fast, but make sure you control the most important parts of your customer experience.

Hire for Scale

Don't try to do everything yourself. Customer success, sales, and technical support are all full-time roles that require dedicated attention. The sooner you can hire specialists for these functions, the faster you can scale.

The Bottom Line

Harpoon was a successful product that we shut down anyway. That might sound contradictory, but it's actually quite common in the startup world. Sometimes a product works well for customers but doesn't work well as a business.

The lessons we learned building and shutting down Harpoon have informed everything I've done since. Customer education challenges led me to focus more heavily on content marketing. Technical infrastructure problems taught me to prioritize ownership over convenience. Sales process difficulties showed me the importance of standardization and repeatability.

Most importantly, this experience reinforced that success in the OnlyFans space requires deep understanding of the unique challenges, constraints, and opportunities that exist in this market. The lessons that apply to traditional SaaS businesses don't always translate directly to products serving adult content creators.

If you're building in this space, study the failures as carefully as the successes. The graveyard of OFM startups is full of great ideas that were poorly executed or poorly positioned. Don't let yours be next.