I have to agree with dermo to a point, although I don't feel 25 dollars is a lot for JJ1, it also isn't pocket change.
I mean, look at how ID software treats it's past. Their doom app for iPhone is one of the most downloaded apps evah. They made quakelive out of q3a and I can tell you, if UT99 was generally considered as better (because of all the extra goodies and because it was just more user friendly) than q3a, quakelive is starting to change that historical perception. Whilst quakelive is gettin q3a players back and even attracts new ones, Epic seems to be more focused on other things.
I mean don't get me wrong, I luv their game engines, and I always root for Unreal technology as opposed to ID technology (for no logical reason other than the fact i play Jazz 1,2, 3d), but come on, if you're not gonna make UTlive, then at least make stuff open source, will ya? Or I dunno, make an epic classics page with a principle pay as much as you think is fair. Seems to work for wiki.
And although I forgot the name of the game, I know a firend of mine showed me how much a couple of guys who made a game made by contributions. They're friggin millionaires. And don't tell me hosting a server (or you can make it torrent based like blizzard has done for its sc2 vids), would cost more than what you'd make by selling these truly legendary games (one must fall, jj1, ut99, unreal, maybe even 2003, do they dare?).
I think it would be a great PR gesture, which by itself makes it a good business move (servers can't cost that much, can they?), and it might just shock them to see how much people are actually used to paying for stuff.
Or they could go for any other marketing technique, I don't feel like I should be the one telling them to take better care of their past achievements.
Then again I might be too liberal (no not in the economic sense of the word) and maybe I just don't get business.