Here's my list:

If there are any that I forgot let me know.

Nintendo

/thread

DMC, Okami, and Viewtiful Joe go to Platinum, where they belong.

Resident Evil goes to Shinji Mikami, where it belongs.

And Mega Man goes to Keiji Inafune, where he belongs.

MVC wouldn't (and couldn't) exist in a world without Capcom. It most likely would become Marvel vs Street Fighter, and would therefore follow Street Fighter to wherever. Disney can pick it up for all I care.

Ace Attorney would fit in well at Atlus, Level-5, or Spike Chunsoft.

Monster Hunter, I don't really care. Nintendo? Sony? Sure, whatever. Not Monolith Soft though, they're too busy making me more Xenogames.

Edit: read below.

I don't even want to entertain the idea a company that owns Resident Evil, Dead Rising, Street Fighter, and Monster Hunter is going under.

They could make a ton of money just offering exclusivity to Microsoft or Sony. Clearly that's why Dead Rising 3 is a X1 exclusive.

Netherealm doing MvC would be weird. Their style of fighting games is really different from Capcom's so I'm not sure it would fit. I actually like Netherealm's fighters better though, so I guess I wouldn't mind. The rest sounds like decent matches to me. I'd say SSM could make a seperate team for DMC, seeing as they're kind of regarded as the hack n' slash masters, although it might be kind of redundant to have them work on two fairly similar games. Maybe give it to Nintendo/Retro or something? Also, I never played Soul Sacrifice but heard it had a lot of great things going for it, so Sony Japan's take on Monster Hunter could be very interesting.

I would change DMC to Platinum Games and give Okami to Sony.

I'm guessing the OP is a Nintendo fan.

Sega should acquire and revive Way of the Samurai. Breath of Fire should go to Namco Bandai. Onimusha should go to Sony's Japan Studio. Dead Rising should go to Microsoft. Nintendo can have Ghouls 'N Ghosts.

Resident Evil should obviously go to Tango and Shinji Mikami.

Honestly, anyone could make Monster Hunter. Tecmo Koei, Namco Bandai, Marvelous, take your pick.

Well I picked Mega Man with Nintendo because it just fits perfectly, I picked Okami with Nintendo because no one does adventure games better and maybe Nintendo could bring some Zelda elements into a new Okami game, plus I think Nintendo is one of the few people that can do that series justice, I just put Pheonix Wright with Nintendo since its already exclusive on their handhelds and idk much about BoF so take that with a grain of salt.

Please, Nintendo wouldn't know what to do with half of these, nor would they take on Capcom's staff.  Probably Sony or Konami would be the best fit, but to play along here are my selections. I am taking into account who could best make the game and would also be willing to do so.

Mega Man - Nintendo (yes, Retro Studios)
Resident Evil - Konami (yes)
Street Fighter - Namco (Sega because of Virtua Fighter and potential for Sega vs. Capcom)
Monster Hunter - Nintendo, more specifically Monolith Soft (Ubisoft)
Phoenix Wright Ace Attorney - Nintendo (Gameloft)
Breath of Fire - Nintendo, Intelligent Systems (Namco, or Square Enix, or maybe Bioware as a darkhorse.)
Dead Rising - Valve (Probably Konami)
Devil May Cry - Sony, undecided which studio yet (OK)
Lost Planet - LET IT DIE! (lets try Ubisoft)
Okami - Nintendo (hmm, Nintendo would have difficulty adding anything new because of Zelda.  I'll go with Sony just so it is a different game)
Viewtiful Joe - Platinum Games (OK)
Marvel vs Capcom - Netherealm Studios (needs to stay with Streetfighter team, so I'll say Sega here too)

Ghosts and Ghoblins (Ubisoft)
Devil May Cry (Konami)
Bionic Commando (EA Mobile)