Not quite what I think you're describing, but we functionally have that for music. For a while, pirated music was hugely popular; now, for a fixed subscription,

Not quite what I think you're describing, but we functionally have that for music. For a while, pirated music was hugely popular; now, for a fixed subscription, you can choose between a few major providers and they each have a global catalogue (or pretty close to it, for the requirements of most users). It's not as if Spotify et al. provide particularly good services, but they're convenient enough for most people. Making life less convenient for users in terms of streaming video is going to be a hard sell. No one wants to pay more for a worse service with less choice, more restrictions and adverts.