It’s really about quality imo. Not all 4k video is equal, and streamed video tends to be especially bad. It’s possible to download decent quality video files, but they are all from blue ray rips. If blue ray goes away, streaming sites might be the only remaining source for digital video files, and high quality digital video will essentially die.
There’s a lot of stuff that isn’t really efficient to own individually. I need a power drill one day a year or less, it’s just gathering dust in my closet the rest of the time. I bet most of my neighborhood does the same.
I often dream of a local community center of sorts that lends out tools, and other such things, maybe for a small yearly fee. They could spend to get something robust, good quality that lasts for a long while. And the whole neighborhood could benefit. Sort of an expanded version of a library? I guess none of that is very profitable.