Astrox Imperium (this is a single player version of EvE Online, so definitely not for everyone)
Dyson Sphere Program
Factorio
UFO:AI (admittedly this is a FOSS XCOM game that started as a clone of XCOM Apocalypse, and morphed into something bigger)
All developed by either a single person, or tiny teams with basically no start up capital. I’m sure I can find more, since the FOSS list of games is enormous.
Labor develops society. Capital enshittifies society.