pokoko on 08 June 2015
Honestly, Japanese publishers screwed over the Vita at the start by continuing to make PSP games instead of moving to the Vita. In general, they're a pretty short-sighted lot.
As I argued a couple of years ago, though, working to build an alternative market is a good thing. Japan needs both, or you'd see a situation where lower-tier games would absolutely get buried on release by the big names. Honestly, if you're a small developer with a new IP, which console is more attractive? It depends on the demographic, of course, but I would imagine some IP will perform better on the Vita.
