Maybe it will not make "Lamborghini collection" money, but I have been making "buy a house and raise a family" money from it for the last 8 years. I know I'm p

Maybe it will not make "Lamborghini collection" money, but I have been making "buy a house and raise a family" money from it for the last 8 years. I know I'm privileged in this regard. In my last 3 gigs, one of them was fully opensource (the Madrid City Hall decided to build a direct democracy platform) and the two others have been "open core", where there was an open-source component accompanied by an "enterprise offering" which was closed source, with extra features. Money was made by selling this "enterprise version", plus support, to other companies. This money pays for my salary, which involves mostly the open source side of things. The Open Source version is a "foundation" and a very good "marketing tool" amongst other developers. There's an ecosystem built on top of the open source version and we have some pull requests from the community. The main drive behind new features is still our internal dev team.