Terrible example since Disney is now making all their content exclusive to disney plus. Movie publishers haven't been making their stuff exclusive because up till now they didn't have reliable method to do it. Now that streaming platforms have proved viable we are seeing a bunch of film and tv publishers making their own streaming platform and taking stuff away from netflix.
Or Netflix to watch Netflix Originals and Disney+ to watch the Mandalorian. Wait...
A streaming service and a game aren't the same thing though. You can stream all the services you want from one device. It would be more like having to buy a dedicated streaming box for Disney plus and a dedicated streaming box for Netflix. Of course you still have to individually pay for the specific content you want.