All of these consoles unlike PS3 though, had other problems as well.
Their manifacturers didnt market them well, they didnt have previous market share and fame to back them up, their consoles didnt have anything that excused the pricing relative to their competitors, and they didnt try enough to build developer support.
Sony has the PS\'s success to boost PS3 sales, and it has a huge support as far as what I have seen so far. Not to mention key franchises. MGS, GT, DMC, FF, God of War, Heavenly Sword, Tekken and the likes.
Also it has other functions and extras the competidors dont have and they are willing to exploit and support their functionality than just have them there for "prestige".