Your first paragraph is so wrong its funny, then hurts, then wraps back around to being funny again.
Game development is pretty infamous for being paid like shit, where management gets you to do it as a passion project or dream job. They likely did not make much more than you do, with almost guaranteed worse hours given how normal crunch time is in the gaming industry.
A lot of game developers abandon game design, even after making massively successful titles that are beloved for decades, because they literally cannot afford to keep the job.