I mean sure, there's always been a lot of people who didn't care for the radio and absolutely found it valuable to buy physical media copies or later digital versions they truly owned. But there's pretty much always been a large chunk of people who didn't care to own a lot of content. They didn't have to be "convinced" to no longer want to own their own copies of music, they never cared to from the start. They just didn't really have any other options other than maybe buy a small handful of physical media or listen to the radio. Now they have a ton more options. It's not enshittification to build new services to target customers which previously only had worse options. Before, these users practically only had AM/FM radio to service what they were looking for. Now there's lots of apps out there with ad supported or cheap tiers (the price of a few CDs a year to get access to thousands and lots of constant new content) offering them on-demand music and autoplaylists and what not.

These platforms aren't necessarily drawing people who really wanted a big privately curated music collection to own forever, they're drawing the people who just want to listen to music and not have to spend much or anything at all for it. Which happens to be a ton of people.