We should have that for streaming music and video. Any streaming platform could offer any content they'd want to host, and they pay into a pool for rights holders. Streaming platforms would have to compete on quality, features, price, availability, etc. But not on holding content hostage.
But right now, I'd say distributors and national license agreements are the biggest issue. Having to VPN around to find content is a pain, and because each country has its own version of content, which subtitles are available also differ - for example, Danish Netflix generally only has Nordic languages for subtitles, and does not have English subtitles. And then all you get is some low streaming quality.
This is the kind of thing that powers the whole "piracy has better UX" argument - having to VPN around, not have the right languages, and getting a poor quality vs. the effort to download a version with whatever subtitles you want.
Disney+ is so far the only service I've seen where this is largely a non-issue - but I also want to see stuff not owned by Disney.
But I'm not a fan of any of them right now. The market incentive for e.g. Netflix to continue a series ends when they reach a statistical benchmark of assumed new / restarted subscriptions. There's not enough incentive to run a series unless it's like GOT, which brought HBO large numbers of new subscribers every season. Too few people are willing to make a stand and quit Netflix in protest.
Nowadays, YouTube Music, Spotify, Apple Music, Tidal, ..., all have roughly the same base music collection, competing on gimmicks like live lyrics or, for example, YouTube Music with normal video playback, or Spotify with its podcast library and sharing abilities.
This way, there is no centralization around a specific entity, but you also get to have the entire library of things worth considering to the average consumer.