This thread sparked sparks in my noggin over Retro Soft. British company that's planning to one day hopefully release C64 All-Stars and Spectrum All-Stars.

(Also due to hit PC and Wii)
They've spent like a bazillion years tracking down the creators of some of the more obscure games these systems had and buying the rights to them for these collections.
Classic compliations were a
massive thing last generation (tee hee PS2 is retro), Midway Arcade Treasures 1-3, Activision Anthology, Capcom Classics Collection 1-2, Sonic Mega/Gems Collection, Sega Mega Drive Collection, Intellivision Lives!, Atari Anthology, Namco Museum 50th Anniversary, Konami Arcade Classics (GBA), Tecmo Classic Arcade, Megaman Anthology Collection, Megaman X Collection, Metal Slug Anthology, and uh.. probably more! These were big sellers, Sonic Mega Collection and the Midway ones sold eighty billion copies on launch day true story. Even though the second and third MAT games were terrible. Especially the third. You broke San Francisco Rush, Midway.
You monsters.
And yeah, digital distribution is certainly filling in some of the gaps now (Neo Geo and TG-16 games now avaliable to the masses at fairly cheap prices.. compared to the three bazillion dollars a Neo Geo game would cost on cartridge~ now it's only two bazillion to download it to Wii). I'd say the industry is doing fairly well at keeping the classics around. Plus lately there's been a huge hungry hungry hippo frenzy over remakes and dragging up long dead games in general
(Lemmings, Rainbow Islands, Devilish, New Zealand Story, After Burner, Alien Syndrome, Cameltry, Super Stardust, Ghosts 'N Goblins, Impossible Mission blah blah blah). I'm always surprised in my pants over some of the announcements these days. I mean, a new Bionic Commando? Seriously? I said wow.
Jam it back in, in the dark.