Can you elaborate? Does Apple TV let you purchase à la carte (on-demand) from any service, or do you still have to buy into a monthly subscription for a service just to watch one movie or TV series from its catalog?

The "one hub nexus" we are clamoring for requires either a) preferably, a single monthly fee to access everything; or b) less ideally, assuming reasonable prices, on-demand pay-per-view pricing.

A nexus that simplifies signing up for a dozen different streaming service subscriptions from one UI is not good enough. All that does is improve the frontend experience, while doing nothing to resolve the subscription hell that expects consumers to shell out $80+/month across many services to watch maybe 1% of the content.