Actually it's fairly hard to get onto XBLA and PSN. Even big publishers play hell getting things onto the PS3. It's why as of late, if something shows up on the 360, and PS3, almost every time theres something exclusive to the PS3 version, and rarely the other way around with the 360. Look at Batman Arkham Asylum for a good example (Joker exclusive levels). Now if big dev's have to go through that BS JUST so they can release on either system, imagine what the small indie devs have to do. Heck, I've even got a prime example for you: Machinarium. Turned down purely from XBLA because it wasn't "exclusive" to XBLA. Which is hilarious because it's not like it was a shovleware game so many big devs have taken to. It was proven on the PC that it's a good game, and people dig it.