Many open source developers has misread the room and thinking the environment is still like it was 15~20 years ago where open source software were the works of hobbyists who has a well-paid day job and only here for street credit.

You know who read the room correctly? GitLab. They've found a balanced way to offer their product under an open source scheme while keeping their lights on. They've earned trust as well as income, that's a job well done.

If one wants to live off of their open source work, then they need to run it as a business and perform appropriate business tricks. Otherwise their own effort may one day become their own rip-off. Not saying anything sinister, but fairness is a balancing game, if you hard work don't treat you well, then it's unfair too.