Because they were smart enough not to bring a loaded gun and shoot themselves in the foot while they were at it, meanwhile MS was waving it's gun about and shot itself in the process while Nintendo was staring down the barrel of it's own gun wondering what came out on the other side and decided to check that discover out earlier than the other two.
Really hope by next gen the other two decide to focus on their strengths and not try rocking the boat too much, bring their A game and then we can have a gen where all 3 can be neck and neck within each other than having just one victor and two lesser losers, creates for such a boring gen when that happens.
Mankind, in its arrogance and self-delusion, must believe they are the mirrors to God in both their image and their power. If something shatters that mirror, then it must be totally destroyed.
