Oh sure. The problem is that, compared to last gen (when PS2 was a very reliable software seller for basically every manner of software in Japan) every current system has obstacles. DS is a beast, but some titles from big franchises (I'm thinking especially of Tales here) have underperformed. And DS is far and away the most successful system.
Out of what's left, I think Wii has the most potential, but PSP is the best current performer. Making what would have been a double-or-triple-AAA PS2 title from a big franchise and putting it on PSP with a lot of hype is a proven route to success -- witness FF7:CC and MGS
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O. I expect KH:BbS to follow the same path. Ports of reasonably successful old games seem to do well too -- see FFT and this opening for SO. This means that there's at least a formula for hits on this platform, even if many titles fail badly.
Wii, on the other hand, is totally unpredictable. Some things seem to do well, others bomb beyond all reason. I think that if publishers work together to cultivate a market they'll be rewarded, but as it is they've demonstrated reticence across the board, and no one wants to step forward and be the first publisher to put "real" titles there. As long as that keeps up you'll have a lot of gamers saying things like "well, the 'real' Tales games are going to X360 and PS3..." which is going to hurt the ability for titles to get traction on Wii. I don't think publishers will change this attitude until someone has a really indisputable, out-of-the-park success.
PS3 and 360, of course, are... not good. I wouldn't bank on profit from Japanese sales for titles on either, outside the very,
very biggest franchises (I expect FF13 and GT5 will sell very well) or carefully crafted specific titles (I agree that, say, Idolm@ster is probably pure profit for Namco.)