Cory Doctorow has been calling out this enshittification for years. The whole read is good, but here is a sample chunk:
Amazon’s monopoly (control over buyers) gives it a monopsony (control over sellers), which lets it raise prices everywhere, at Amazon and at every other retailer, even as it drives the companies that supply it into bankruptcy.
Amazon is no longer a place where a scrappy independent seller can find an audience for its products. In order to navigate the minefield Amazon lays for its sellers (who have no choice but to sell there), these indie companies are forced to sell out to gators (aggregators), which are now multi-billion-dollar businesses in their own right:
A combination of self-preferencing (upranking Amazon’s own knock-offs), pay-for-placement (Amazon ads), other forms of payola (whether a merchant is paying for Prime), and “junk ads” (that don’t match your search) turn Amazon’s search-ordering into a rigged casino game.