I really don't think my comment said anything about people getting rich; I myself was involved in one report of GPL abuse to the EFF on behalf of Busybox, yet another early 2000s device created by 2 people in their bedroom who simply decided the license didn't apply and releasing the source code was not their responsibility - Busybox had a "Hall of Shame" web page up back then, you can still see it in the Internet Archive. It was pretty rampant, the sharks saw "free code" in the water and simply had the attitude "so, sue me and prove it in court" about early GPL. It took us collectively a decade or more to actual make things like the GPL enforced in courts of law, the dawn of our digital age started with bad guys trying to exploit the good guys who gave away code.

My thought is that you're focusing on the "gratis" part of FOSS, whereas I'm over here in the "libre" side of the house - as a (now) Linux systems guy, when (foo) doesn't work I reach and go down that rabbit hole of code until I figure out what's wrong and we fix things - that is what Open Source is about to me, it has no underpinnings of monetary compensation, it's all about two (sic) people who don't know each other being able to randomly see each other's code to solve the problem at hand (and then possibly submit fixes, bug reports, etc.). I've traced tons of open source software to solve problems both personally and professionally.

Getting paid for open source is a relatively new thing in my life timeline, I don't honestly subscribe to that idea but to each their own. I do, however, recognize the time effort and energy it takes to create said software, so I personally take these tech dollars I make at $job and donate to a lot of open source initiatives, coders and even public radio stations bringing me "free" music. There's no such thing as a free lunch as a wise sci-fi author once wrote.