Exploding production cost is pretty much the only reason (eg we hit diminishing returns in overall game asset quality vs production cost at least a decade ago)

Exploding production cost is pretty much the only reason (eg we hit diminishing returns in overall game asset quality vs production cost at least a decade ago) plus on the tech side a brain drain from rendering tech to AI tech (or whatever the current best-paid mega-hype is). Also, working in gamedev simply isn't "sexy" anymore since it has been industrialized to essentially assembly line jobs.