Not all licenses allow charging for forks. You can charge for your services always. And you can charge for code that is all your own. But, only certain licenses allow you to actually fork and charge for it without sharing those contributions. And many might not even really consider those licenses to really be FOSS.
Not all licenses allow charging for forks. You can charge for your services always. And you can charge for code that is all your own. But, only certain licenses allow you to actually fork and charge for it without sharing those contributions. And many might not even really consider those licenses to really be FOSS.