It's ridiculously unfeasible to sub to them all. You'd be paying hundreds a month. They need to do some kind of central platform, like Steam for games, that works for TV. They all take cuts on their own content or something.
I don't think the current system has a long lifetime.
I am subbing Sky, netflix, youtube HD, prime for less than £35 per month. Then will take a silly offer of a few quid (or free) to binge watch any series i missed out on on Disney once in a while.
Thats a price level I am comfortable with.