There's no need to really port, just recompile the other *nix apps if there is a need for it.

I think the people against iPhone or Android apps are overlooking one key thing... people want those apps because they don't quite exactly exist fully in the *nix world. Not 100%, not in the way that doesn't require the end-user to jump through a few hoops.

And ultimately... it doesn't exist natively quite yet. That is the main reason why people are looking at ports. There are no real racing games - Tux Race does not count - and there are other genres that are wholly lacking. And before it's said, emulation is an option, but not always one that satisfies an users want to play a modern game, not a game from 1996 in 2010 on a 2009 device.