Paul Graham wrote an influential essay in 2001 arguing that online hosted software was going to be great:

https://www.paulgraham.com/road.html

The benefits that he described did come to pass, but the costs to user autonomy are really considerable. Companies cancel services or remove functionality or require updates, and that's it: no workaround and no recourse for users.

The hosted LLM behavior issue is a pretty powerful example of that. Maybe a prior LLM behaved in some way that a user liked or relied on, but then it's just permanently gone!