Having an industry’s labour supplied only by those inherently passionate about it is a great way to crush wages and working conditions. Look at what companies like Blizzard get away with because their employees just want to make video games at their favourite dev studio. While they’re a pain in the ass sometimes, I welcome the devs who are only here for the cash.
There are plenty of non-games software companies that are treating devs purely.
However almost all of the companies I have worked for in my 30+ years career treated devs well.
So if you are in a shitty situation, I highly recommend finding another job instead of just placing yourself over a barrel.
See also: public school teachers. You either need to be insanely passionate or incredibly stupid to take ~$55k/year for long hours as an educator that is also a babysitter. And insanely passionate teachers are in short supply.
I think you have the law of supply and demand backwards.
This is totally leaving out the supply and demand aspect. People like the idea of making games more than working on the plumbing of some accounts payable software, so Blizzard can pay less and treat worse than NicheBoringFinanceCo.