I think a lot of casual gamers who had a PS2 but were unwilling to shell out for a PS3 have already moved on to Xbox 360 if they really have wanted to move on to HD gaming. Simply because as a casual gamer you want access to a wide catalog at a reasonable price. And for those who have not its widely believed Microsoft will match any Sony price cuts to keep it that way. A truly casual gamer is not likely to have an Xbox 360 and a PS3. And ones still on a PS2 only are probably so price sensitive that a price cut on Xbox 360 will likely be more attractive to them than a price cut for PS3. Also casual gamers are more concerned with a bigger catalog rather than specific AAA titles and they are more swayed by the general media, which has reported widely for years now that PS3 is #3.
So I'd like you to be right, more competition is better, I prefer Sony as a company in general, but I don't think that you are.
Currently playing: PC: Wolfenstein PS2: Final Fantasy X PS3: All-Pro Football 2K8 Wii: Force Unleashed PSP: God of War: CoO Xbox 360: Gears of War 2
Most anticipated game: Dragon Age Origins (PC)