When the PS3 / 360 released, development investment increased from 15 billion JPY ($146.5 million) to 30 billion JPY ($293.0 million). The great thing about mobile and portable game development is that the expectations are lower (much lower for mobile) in terms of development commitment from the staff.
Essentially, Capcom wants to invest heavily in the smartphone gaming realm as an avenue for future growth opportunities. Capcom's mobile sector has been lagging recently, and they want to invest in it to increase their operating margin in that area.
The president of Capcom says the way for Capcom to dedicate resources to mobile development (in terms of both expertise and flexibility) is to increase the percentage of in-house development dedicated to it. To this end, Capcom is using 4 billion JPY ($39.1 million) of the revenue from Monster Hunter 4 to create a new studio in Osaka (where Capcom's HQ is located), and they are ramping up development staff accordingly.
The new center in Osaka still has a possibility of being multi-purpose, though.