Why?
Because music doesn't do that much exclusives, so you can just choose a platform and you're ok. Whereas movies and tv shows are ALL exclusives now, so you have to subscribe to multiple places. It wasn't always like this as you remember, and that's why piracy died for a time.. you could just have one streaming service, and you're good.
But people got greedy. They saw what Netflix had, and wanted it for themselves.. not realizing what that would mean
The problem is -- from the content companies' point of view -- that if there is one streaming service and multiple content creators then the steaming service will make the lion's share of the money.
So the big content companies all want to have their own streaming service.
This of course drives people back to the pirates.
With TV and movies it’s highly fragmented. So I think people just don’t sign up to certain services, chop and change services, or resort to piracy. Or possibly the younger generations put the time into YouTube & TikTok.