The way it usually works is that you become an expert at a certain stack. Companies will pay an expert when they need something to be done around that certain s

The way it usually works is that you become an expert at a certain stack. Companies will pay an expert when they need something to be done around that certain stack. Whether that particular stack is open source or not is not especially relevant. I guess, what I'm trying to say is that if you become an expert at an open source stack that is useful, you should be able to land consulting jobs to improve that stack. But it's not because companies particularly care about open source.