If they want their content broadcast on TV or shown in theatres, no, it's not as simple as that. They'd have to unbundle the streaming rights, but that's gonna be a very hard sell because streaming rights can undermine broadcast/distribution rights. Otherwise, they'd have to set up broadcast and distribution themselves in each and every country, which is actually impossible.
"I want it this way, so it should be this way" isn't how things in this world work.
As I said, until broadcast and cable TV is dead, and theatres get films directly from studios, we're gonna be in this mess. And there's plenty of powerful elements preventing that from happening. Even then, existing rights may not expire for decades.