The main thing you have to figure out, especially if you want to make money on it, is what it offers that existing solutions don’t. A lot of self hosting option

The main thing you have to figure out, especially if you want to make money on it, is what it offers that existing solutions don’t. A lot of self hosting options exist, and many of them are free and open source. So why would someone pay for your project? Even a very novel solution like Sandstorm, which six years later has no real equal in the security department, struggled with convincing people to pay for it.