Isn't the same thing seemingly happening with Wii U? Maybe it's just because there are so many kickstarter projects out there, but I've seen quite a few have a Wii U tier, and actualyl hit that goal. A lot of those have Vita, or PS3/360 as well.
I haven't noticed it as much, but it makes sense that hardcore fans on niche platforms would really really like to play games on them!
I'm a hardcore Vita fan and I HAVE kick-started games a little extra in hopes of it reaching the Vita goal