Perhaps the term you are looking for is corporate feudalism.

Maybe, but you have very similar dynamics in China or other countries. At the root the problem is one of power dynamics, inequality, authoritarianism (whether legitimized by money or politics or both). Or said otherwise, an erosion of democratic and egalitarian ideals.

“Late-stage capitalism” is the normal term for expressing a belief that capitalism tends to eat itself over a long enough time horizon.