They are the only ones allowed to license the work in a region, so providibg a movie or selection requires separate licensing agreements for every country or region it is served in.
Businesses that manage to take fees for nothing due historic reasons need to be eliminated.
My gut prediction is that if a service has a strong correlation to the desired content, E.G. Disney+ for "kids", it MIGHT work out, at least in the short term. HOWEVER, for wider culture, and particularly with different "tv networks" and studios with content libraries split among many services, the friction of not having a single place with everything, of not having a 'streaming store', will drive many to routing around the insanity and accessing the culture they want on terms they're willing to agree to.
Short version:
* have everything, I mean it.
* cost less than basic cable (total)
* completely ad free (probably)
* offline caching is a must (road trips)
* capable of playing on anything I want (DRM free)