Because what people really want is an iTunes like service that just has everything for a single price rather than 14 streaming apps that have content overlap but also exclusives and rotating temporary content licenses costing $20+ each with ads.
There was a period of time when I gave up pirating because Netflix+prime was good enough to watch just about everything, and on-device search easily searched both platforms and provided a unified search/watch experience. It wasn’t worth the effort of finding and storing content yourself.
Fast forward to today, you search for something, it belongs to some fucking random service you don’t currently pay $17.99 a month for and then halfway though a season, it drops from the platform and goes to another streaming service you also don’t pay for. It’s just endless bullshit and nickel&diming now.
I’d happily pay $60 a month for a single service that just had everything and saved me from all this bullshit, instead I’d be forced to spend $300 a month for 23 services I barely use just to have access to the catalog of content I want.
Another example of this done well is steam- I just want my whole library in one place, I don’t want 5 different game libraries each with their own crap. Consequently I’ve spent thousands of dollars on steam over the years because of the unified experience.