That's fine, hey it's their money to lose. They can do whatever they want with DMC, I'll just avoid it along with the majority of DMC fans.
And this can be said about Square Enix, EA, Ubisoft, Activision, Nintendo, and pretty much any developer, studio, film maker, publisher, etc. in the world. Just replace "DMC" with something like "Mario", "Final Fantasy", "Battlefield", "Mirror's Edge", "Street Fighter", "Ninja Gaiden", or "Sonic".
Note: This post isn't personally directed at anyone.
Apart from financial issues, I think legal issues would be involved too. For one, Platinum Games isn't as wealthy as Capcom. Why do you think they went after an third-party to fund some of their games? Even though Capcom might have financial issues, they still have franchises selling. Monster Hunter is a popular franchise in Japan and I believe has a growing community overseas. Monster Hunter 4 is about to be released and will probably sell well. That said, they have games such as DmC, Resident Evil 6, and Dragon's Dogma currently on the market and even if they're not at their original MSRP prices, they're still selling and every penny counts. DLC also adds to the equation. Platinum Games only has 7 games currently on the market: Madworld, Infinite Space, Bayonetta, Vanquish, Anarchy Reigns, Metal Gear Rising: Revengeance, and The Wonderful 101. The last two are the most recent games and one was collaborated with Kojima Productions and Konami meaning some of the profits are probably split, and the other is restricted to one platform: the Wii U. The other games aside from Bayonetta are not well-known. That said, Bayonetta is still part of an unpopular genre. Had they been given digital releases, maybe more money could go to Platinum Games, but from local stores - as in not Amazon or Newegg - those games are kind of rare to see.
Legally, Capcom owns Okami, Devil May Cry, Megaman, Godhand, Street Fighter, etc. That means no one can make any of those games without Capcom's permission. Speaking of which, they haven't been focusing on many old and usually requested franchises. Megaman is one big example. Even though it's a beloved franchise, Capcom decided not to do anything with it. Nobody knows why when obviously people would pour money down Capcom's bank accounts. So, Mighty No. 9 was conceived as an answer to Megaman's fans. It's a spiritual successor by Keiji Inafune who was involved with the original Megaman's development team. He could not legally make a Megaman game without having to deal with legal protocols, instead he made a game similar to it. Judging by how well Mighty No. 9 is doing with its goals, yeah, people want another Megaman game. Likewise, Resident Evil's current track with Capcom has been iffy. The Evil Within, by Shinji Mikami, the creator of Resident Evil - ooo, a trend - seems to be a spiritual successor to Resident Evil. Personally, it seems to early to say that even if both games have "Evil" in their titles.
What does this have to do with DMC? Well, Hideki Kamiya was the creator of Devil May Cry, but he was not involved with Devil May Cry 2, 3, 4, and obviously not DmC: Devil May Cry. He, like Inafune, cannot legally make another DMC game. Actually he could make a "DMC" game. GOW, anyone? It's either God of War or Gears of War... How original. One's singular and the other's plural. Anyway, I digress. Kamiya can't make another Devil May Cry game, but he did "make" another Devil May Cry. It's called Bayonetta and the sequel comes out in 2014. Bayonetta is considered the spiritual sequel to Devil May Cry as Dark Souls is to Demon's Souls, and Mighty No. 9 is to Megaman. The only issue is that hack n' slash isn't a popular genre like the plague that is the shooter genre. To make it worse, Platinum Games isn't that well-known compared to Santa Monica or Capcom. For games of that caliber, or any games since the cost of game development is so high nowadays - a 2D game like Shantae: Half-Genie Hero needs $400,000 while Mighty No. 9 needs about $900,000 as a bare minimum, yes, 2D games - another Bayonetta needed serious funding. Platinum Games went with Nintendo, which is a risky deal. That means the game will be locked to one platform and a platform, though, only being on the market for one year, isn't selling or in demand like the anticipated, next-generation consoles.
Also, developers who leave usually don't have good relations with their former employers; rocky relations probably, but hopefully not "I want you dead" relations. Patrice Desilets, one of the original developers for Assassin's Creed, is arguing about his rights to 1666 with Ubisoft. Had he stayed, maybe 1666 could have been made after the 100th anniversary of Assassin's Creed. On the other hand, leaving and gaining the rights to 1666 would mean the game comes to light much sooner and under his full control. I think Hideki Kamiya had some issues with Capcom, Keiji Inafune was dissatisfied, and I don't know about Shinji Mikami. Nobuo Uematsu is probably respected by Square Enix, but that doesn't mean he'll be returning soon for a ton of games. He'll be here and there, but not always there. Same thing with Hironobu Sakaguchi, the man who made Lost Odyssey, Blue Dragon, The Last Story, Parasite Eve, The Bouncer, and a ton of other games.
I know lots of people, things, companies, etc. do stupid, terrible, and annoying things to consumers and usually they want them to suffer. Here's the thing: companies are made up of other human beings. Sure, you have your greed, narrow-mined, narrow-sighted, idiotic heads of companies, but you still have normal human beings employed there. Some of those employees love their jobs, just look at the paragraph above, those humans left to find a way to make videogames they and others will love. THQ and 38 Studios went bankrupt and were shut down. All the employees became unemployed. Fortunately, some of them like the former employees of Vigil Games were picked up by Crytek. I don't know about the employees from 38 Studios, but I hope they were picked up by some gaming studio. THQ was a large company, but not as large as Capcom (maybe), Nintendo, Sony, EA, Activision, etc. Imagine if one of those went down. Yes, the evil heads got what they deserved, but what about the other employees? Hell, some of the heads of gaming companies are awesome. Shigeru Miyamoto and Satoru Iwata from Nintendo come to mind as cool heads of gaming.
Fortunately, games come in many varieties. Capcom's not doing a good enough job with DMC and Resident Evil? Well, they have some neat games like Dragon's Dogma, Monster Hunter, and Street Fighter along with published games like Remember Me. Their past games are definitely good including collaborations like The Legend of Zelda: Oracles of Seasons & Ages, A Link to the Past (remake), Four Swords, and Minish Cap.
