I find the situation is similar to right-to-work laws. If you find the walled-garden/closed-shop beneficial, you will not want it to be forcibly cracked open. Even though an individual can opt to remain with the App Store (or union), the influence of Apple (or the union) has diminished relative to the employer (or Facebook, Epic etc).

In the end, despite all the marketing, neither issue is about user or worker freedom. It's about which entity has more power.