OK let me tell you a little secret about OF vs porn.
1. OF has a much higher potential to make money, because OF only takes 20% of the profit. at $10 a month, You only need a few hundred subscribers to actually support yourself.
2. The real issue is that OF actually requires work to continue, while porn is something you get paid for upfront. If you're lazy ( and many porn stars are), you're going to discover that your audience quickly begins to evaporate unless you keep doing more explicit stuff. For example, to do 1 collab on OF, you need proper documentation for everyone involved (thank Austin Wolf for that), a shooting location, editing, lighting, accomodation and/or travel expenses on top of promotion. It's like a small business. A porn studio would just take care of that for you.
