We will have enough if we own all 3 home consoles, but for most people that won't be enough. Since Japanese gamers largely play handhelds now, we'll all likely have to buy 3DS systems to get our fix.
I think what's going to happen to console JRPG's, is they are slowly going to become exclusive again. Not because profits are higher, but because Nintendo, MS, and Sony will publish smaller games to build a library. E.g. The Last Story and Lost Odyssey were not developed by Nintendo and MS, they just published the games.
Nintendo and Sony will also still likely be resonsible for a couple good JRPG's each too. Nintendo already has X and SMT x Fire Emblem planned. Plus Nintendo is publishing niche games by Platiunum Games.
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