I don't know that we have to stick with the old ways, but more importantly, it's depressing when technology is limited in this way. This isn't even morally arguable technology like genetic manipulation, this is simply a post-scarcity situation made, um, artificially scarce. It's never the right time for change; if some companies had their way a post-scarcity world would never arrive ("now is not the time! Think of the economy!"). A Star Trek world would never happen because copyright holders wouldn't let it happen.

It's depressing when people argue "but libraries can only lend as many physical copies as they have" as if this was a good thing about books instead of an accidental limitation.

Actually, that's the concept I was looking for: accidental limitations. It sucks when publishers and media companies seek to turn accidental limitations into mandated limitations, as if they were a law of nature, and when the technology could rid us of said limitations.