To migrate, the average user will need to see the problem first. Most people wouldn't care enough about it even if they magically could press a button and migrate.
In the attention economy the browser and the mobile OS (and soon your LLM/Perplexity agent) are the most important points to control the aggregate user data. So it's a lost battle.
For a sub 0.01% of the nerds there would be alternatives for the non-DRM content, but this wouldn't change the big picture.
It's like the junk food business. Yes it's bad for people, but it's so addictive...
