I do actually think it's fine that bigger movie/entertainment companies get their own streaming services. I'm not particularly interested enough in Disney stuff myself to get it, and yes, I know I'm arguing in favor of the billion dollar companies here, and yes, it is easier if everything you want is on one site/app. But I honestly think this would have happened much sooner.
People are still being given a choice. It's Disney, it doesn't get much bigger than them. Logically speaking, this is the road that makes the most sense to them - easy access to their library, all under one umbrella. It's actually healthy, unless you all really want that monopoly for Netflix.
It's an extra step and extra money for consumers. I get that. But we're still just stepping out of the Wild West era of digital distribution. It still seems better to me than what it used to be - either hope that you'll catch your shows and movies whenever they're on on whatever channels your package give you (with tons of commercials), or spend an insane amount of money on home media if you're a collector. As someone who grew up in the 80s and 90s, this will still be a much cheaper and easier option. This is, for better or worse, the alternative people who used to argue for piracy as a legitimate option wanted. Here it is.
I honestly believe the general audience will get used to having multiple subscriptions very easily, and no doubt some form of combined subscription services will pop up in due time. But as much as the idea may suck right now, I can't really see any other option short of piracy or time travelling back to the 80s/90s/00s. And I definitely don't think the situation was better back then.
It makes business sense for them, and I don't think they're morally in the wrong at all either. I definitely don't want the mistakes of the music/print industries to be repeated by the film/tv industries.