The point of open source is that you can't make money off of (selling) it (directly).¹ Neal Stephenson memorably described open source as a tar pit that eats up

The point of open source is that you can't make money off of (selling) it (directly).¹ Neal Stephenson memorably described open source as a tar pit that eats up opportunities for profit in software development. I realize that sucks if you need an income, but if you write open-source software, that is what you are supporting. (And I say that as an open source dev.) When you license a piece of code under the GPL, you are saying "people who write opensource code should not have to put effort into remaking this." When you license a piece of code under BSD, you are saying "Nobody should have to put either effort or money into remaking this." Like it or not, that's what the license means. ¹ Yes yes, distribution fee, I know. And you know damn well that's not a workable commercialization strategy.