There's really no telling who Otto belongs too... the whole she-bang is one big legal mess I'd imagine.
GC made the game, licensed/sold it to Midway. Namco sued Midway over the Pac name, Midway handed over the stuff to Namco, GC sued because they felt they owned the Pac "Family" concept... Midway went under, rich guy bought the Midway name and debt...
... So, who owns it? No telling... if it's Namco, we'll never see it as they'd just shove it in a back closet, so to speak, and never let it see the light of day again. Same thing they did with their artwork for the machines... they didn't support their old games, but God forbid you made stencils for the thing!
Midway... no telling how that would pan out... the new owner probably wouldn't care.
GC, if that's the case... then we're probably in luck because I seriously doubt they care about who puts it out or who has it. They probably don't want it being sold without getting a cut, but as far as putting it out for free... ... yeah, I could see them doing that.
The big issue with MAME is that there ARE people that have the machines, they own them legally and MAME is a great resource for finding ROMs for your machines and fixing them. BUT, since there were only a few Crazy Otto test machines, that excuse falls flat on it's face as for as the legality of MAME.
No idea how this is all going to end up... IF... IF IF IF the ROMs get released... get 'em while they're hot, so to speak... that's all I'm saying. There's no telling how long the DL link will work before the courts/companies step in and start try'ng to get their cuts. Burn 'em, back them up, save them, etc etc.
Despite the obvious issues most people have with MAME (Ded. Major Havok becomes MAME'd Street Fighter II Championship World Rainbow Warrior of Justice Hero Edition)... this is one of the cases where MAME really shines.