There's a huge segment of the piracy community that's also doing media preservation. I've got a couple gigs of books I've scanned in myself that are oop. Most recent was the book sequel to E.T. lol. I don't have the resources to keep a lot of video, but books I can do :)

For the YouTube stuff that I can't bear to see disappear, I make exceptions to that, though. I can't keep everything, but stuff that really brings me something important, I find space for, even if it's only on a burned dvd. Download, transfer over to my media PC, burn the disc and hope I never need it

Hopefully, there's enough of us out here keeping some things that if the big companies ever shit the bed and go away, there's some hope of a solution like peertube to fill the gap.