How did Sony manage to lose the exclusivity of the Monster Hunter portable series?

[A2B24R246]

If Monhunter is exclusive to 3ds, then Moneyhat ofc. PSP is by far the strongest in Japan, so they would want to reduce the potency of its successor, and try to regain a lot of lost hype.

However, Nintendo didn't moneyhat them, I have a sneaking suspicion Capcom will have something big for the PS Vita after the launch of Mon Hunt 3gs with either:

A. Announcement that a Mon Hunt cannon title (like 4) will be coming to Vita
B.Or Mon Hunt MMO (Monster Hunter Frontier online) or something like that coming to Vita

Also have a feeling that Capcom will try to revive Lost Planet on the VIta, so I'll be looking forward to that as well.