But what if I want a faster horse?

I simply hate that good services get ruined because there's money to be made by providing a different service to a broader group of people. It's not quite enshittification, it's companies making something that serves a relatively small group of folks well into a thing that serves a very large group of people in the highest-ROI way possible.

Companies no longer have a target user. The target user is whoever can be juiced for as many pennies or eyeball-seconds as possible. There's no persona for user stories, it's "literally whoever we can get this in front of for as long as possible". It's about the lowest common denominator.

Which implies, these products are not "designed" anymore. "Designed" implies that the creator made choices to make the product better for a target user. But there's no target user. When your service has a billion users, it's not possible to design for _anyone_. Mouse traps aren't "designed" for the mice, they're built for the people who don't want mice around. Services aren't "designed" for a billion people to interact with, they're built for the owners to make as much money as possible.