This is an awesome product, but you are going to have to spend a lot of advertising money to reach the right customers. Reason being, most companies either go t

This is an awesome product, but you are going to have to spend a lot of advertising money to reach the right customers. Reason being, most companies either go the PaaS/SaaS route, or go full open source with paid support. My guess is most of your potential customers have already had to pivot to one or the other. Your only shot is people who are still in the early stages of developing their product and people who are looking to pivot to a different monetization model. You have to sell to your users the idea that in 2018 it is possible to police and track license keys and go with that sort of business model (obviously it is possible, but it's still a sell). Remember, most of your customers were pirating software left and right and using keygens 10 years ago when they were in high school / college, which creates a subconscious bias against license keys in general among the current generation of techies. That's why almost no products use them these days. I would also suggest offering the product completely for free, and then charging over a certain number of keys. Maybe for 100-1000 installs you charge $5/month, then $25/month for 1000-10000, $50/month for 10000-100000, etc. You could also go with the $5/month gets you 0-1000 keys model, and then scale from there. That option will cash in more on the (large number) of people launching failed apps that get under 1000 users.