The DE-10 nano is sold by Intel typically at a loss to assist with educational endeavors. The retro gaming community just kind of adopted the platform due to its cheap nature.
I think the MiSTer is the exact opposite of what you’re saying. It’s a corporation essentially subsidizing video game preservation for a period of time.
MiSTer is also open source software and hardware.
Again, you’re the one buying digital games on steam and calling others corporate dick suckers. You’re the one funding it without paying basic attention.