I love a lot of what you are saying and the comparisons.
But the change from disc sales happened long ago. Disney really cleaned up in my opinion along the way (Comcast only recently became a content owner).
See, when I was a youngin, Disney would re-release all their movies, say every 5 years have something in the theater again...then we had Vhs, then DVD then blue ray...all the while folks upgrading or new parents wanting their kids to experience what they did.
Anyhow, Disney saw the drop in blue ray sales a good 7 or more years ago. They got Marvel, Lucas everything...they went big on content and pushed movie budgets way up.
But they also have stuff like a High School Musical...that is pushed to school drama clubs as long as royalties are paid...I do not know, I think I am just always am amazed how many ways Disney has to make money off their IPs, but it looks like (to this outsider) that things are just off with them anymore...I do not even know what I mean by that.