“While the level of what’s missing has reduced, I still feel that none of the platforms totally satisfy my needs. That’s why different games on different platforms is the way to approach the situation. Also, from a business point of view, it doesn’t make sense to develop for a single platform at this point.” - Atsushi Inaba, Platinum Games

Looks like a perfectly sound business strategy to me. Develop games that make sense for each platform, and hope that the market will follow. Make sure to read the full interview, which talks a lot more about Platinum's philosophy, and the possibility of ports.

Full interview here