In five years there will be two streaming services. Between them they will have every movie and tv show ever made.
And we won't even remember a time when there were multiple streaming sources, each with some stuff, and a bunch of stuff not on anywhere.
Universal access to every movie and tv show ever made. And kids will just accept that as the norm and not even understand why it wasn't that way when there parents were growing up.
Sure something like that will happen eventually but 5 years is WAY too soon.
It will take at least 10-15 years to undo the market momentum for cable services, and that needs to be undone (as in % of American households that has cable tv falls below 50%) before content providers will even THINK about entertaining centralized ondemand video services.
I mean, just because we can easily dream of a system and see the benefit doesn't mean its the best current business option for content providers. Heck the system you described probably seemed obvious and eventual to everyone here sometime back in the 80's or 90's but here we are decades later and cable is still king.
So 5 years is way too soon. More like 25.
Unless your post has a higher level of cynicism then I suspected and you are basically saying that all the media companies will be merged into two entities in five years. That future is one I find more believable honestly.