@buru5 of course it's better to have something for unlimited instead of limited time. And, since the status quo for games was the former* for so long, people hate to see it change?
But as for preservation, for example MMOs simply can't be preserved, because the game code is only a shadow of what the game is near its peak player count.
But I also keep thinking: There has been so much art lost over the centuries, and soooo much gets produced these days. Do we really need to preserve it all?