This makes absolutely no sense to me.
Not only does XBLA have a seperate portal for indie games (making your reasoning baseless), larger companies do contribute to it and PSN on a more regular basis than they do iOs platforms. The only company I can think of that seems to heavily lean towards the App Store, instead of heavily leaning towards the console services or having equal footing in both camps, is Square Enix. It probably helps that the types of games they typically release on it (new/updated rpgs/strategy games) are much more suited to a platform without buttons then say a platformer.
The main audience for a Jazz Jackrabbit game will be older gamers with nostalgia, I can't think of a better way to turn a good chunk of them off then by saying "And you use a touch screen to play it!". Most people do not like touch controls for a good number of genres, and the ones that typically do that Jazz would fit into would probably disappoint many people.
When you say "New Jazz Jackrabbit game, what do you want" most people will probably go "Quality 2d platformer". You're just not going to get that on an iphone, you're going to get that as a download on XBLA,PSN and Steam. Hell if Epic would get off their anti-Nintendo kick, a new 2d Jazz would probably do gangbusters on the WiiWare service which has seen a healthy amount of retro revivals from the Konami Rebirth series to Blaster Master Overdrive.