It’s not like the game was in development for 10 years. Given the licensing and Marvel’s acquisition by Disney, it’s a miracle that MvC3 even exists. Marvel had sold off nearly all its IP leading up to its bankruptcy in the late 90s and only recently recaptured enough of its own rights so that a game like MvC3 is even possible (by contrast, we will NEVER see Children of The Atom even if Disney/Marvel wanted to because they don’t have the rights). Given the legal issues, it’s unbelievable that Capcom went after the license successfully and then actually gave us a well-developed game rather than just cashing in on the license like every other licensed game in existence. Capcom could have easily degenerated MvC into Powerstone, a shooter, or some other hack game just to exploit the license and be done with it, but instead we got something responsive, competitive, complex, and deep (with new discoveries being made almost literally every day).
Heck, it’s astonishing that Capcom kept going even after Disney acquired Marvel. By that point, Capcom already had the licenses with Marvel, but they had to know that any future ventures or control of MvC would now involve Marvel’s giant financial backers and parent corporation (versus working on a comparatively personal level with Marvel which, despite the size of their IP, is actually a fairly small corporate entity in terms of business, management, lawyers, etc). That means in the remote possibility of MvC4, derivatives, DLC, digital distribution of the game for future consoles, etc. Capcom now has to deal with the House of The Mouse… the corporation that single-handedly changes Copyright duration, that owns ABC/ESPN/etc, which made juggernaut Pixar come crawling back to them, and a dozen videogame developers under the Disney Interactive division.
Anyone less committed to actually getting a game out would cut their losses and run for the hills or release shovel-ware at that point. But instead, Capcom took it as a sign from the gods that the timing was perfect for such a game: that SF4 started a revival, TvC proved their lawyers some of the most agile in the business, and that they managed to eek out an impossible licensing deal with Marvel just before the Mouse scooped them up.
We don’t know the specific terms of the licensing deal, but you can bet that Disney is pouring over it and looking to unravel it and frustrate Capcom with it (see: Disney’s dealings with Pixar) so that they can take advantage of the Marvel licenses under Disney Interactive developers en masse to see a return on their investment in purchasing Marvel (why would they want that money going to Capcom, outside the Disney family?). Just like Warner made MKvDC because it owned Midway and DC.
The game’s existence is a bloody miracle which by all rights ought not to be as good as it is. Such an anomaly of licensed gaming should be noted and respected (if not flabbergasted awe) not taken for granted like spoiled kids with unrealistically absurd expectations. Be grateful there even is a MvC3.