Why though? Why do you think it's good that e.g. StealLabs can make use of OBS's actively and freely (as in, StealLabs does not pay a cent to OBS) maintained code, add their own stuff, no attributions, and give it away for a price? Not even for a price.. for a fucking monthly subscription!
In the above, StealLabs is the name of StreamLabs, but the former name is more descriptive.