Well yeah, it would be much more profitable if the game is made for great consoles like NES, and maybe handheld like GameBoy. I am sure 89% of people have them, or have access to them. I am EXCUSE ME???
*cough* Well, on the serious side, I can see how making the game for PSP would be reasonable, since it is still the most popular portable game system for gamers. (3DS not out yet, NDS is a bit weird for it, so PSP would be the most viable handheld for most games, and anyojne who that is related to the production of PSPGo would serve the world better by having a nice lobotomy with a HUGE icepick)