Consider the model of monetary distribution based on actual watching of content. If you're a movie library owner, with a catalog of 1,000 mediocre quality studio movies to offer up to a streaming service, are you going to take close to $0 from Netflix based on few people watching the content there, or will you take a lot more from a competitor that needs filler content to take on Netflix? Due to this effect it's impossible to distribute the majority of movies on streaming services based on how often they're actually watched (the demand for them). There will always be some other service willing to bid the bottom quality 3/4 of movies up.
If all of their customers globally were actually willing & able to pay ~$22 per month for Netflix streaming, they could probably technically afford to give you access to nearly all movies ever made at today's licensing rates. Hollywood won't comply with that however, not under any circumstances. Netflix can realistically never afford to pay Disney enough to not launch its own competing service.