"Product Degradation" has been the modus operandi for nearly every online service for like 10-15 years now, but it's the Gamepass price increase is what got the FTC's attention? Where was the FTC when the movie/TV streaming service market balkanized itself in an arms race to reinvent cable?
Granted, I doubt the FTC could really do anything meaningful to stop enshittification given that corporations are effectively above the law these days, but it's been blatantly obvious that this was going to be Gamepass' strategy from day one. If this actually surprised anyone at the FTC, they really haven't been paying attention.