*sigh*

Okay, you're now criticizing what you're advocating. That doesn't make sense. That aside...

1) The fact that FF fans are complaining about how FFIII is coming out on a handheld speaks to the popularity of this idea.

2) It came out on DS because it was never released for WSC or GBA. By the time SE had the time to work on a remake again, the DS seemed like an interesting choice. It's entirely possible that this will eventually make it to some console eventually.