This is something society needs to deal with. If not for groups like them eventually the media will be lost. IMO there should be a rule that if something isn’t for sale by the rights holder for X years it becomes legal to distribute copies freely.
Agreed, but that still wouldn't help with games that have primarily online experiences, because things like server programs and content management systems also need to be archived for those -- and these (almost) never reach the hands of the people.