Ok, First of all this is not an account of developments, it is just history.
Let put some facts in the table you obviously do not know.
Nintendo developed the scheme of controller layout used till now (SNES controller) in its 2 competitors
Nintendo basically give 3D adventure games the face they have now, with Mario 64 and Zelda OoT the basically defined the genre.
They have defined handheld console technology over and over.
Microsoft
Probably its most powerful innovation, or implementation has been online gaming, they used the support and experience they had on PC and put in on practice on Xbox, bringing great results and giving a true online experience, task that both Nintendo and Sony where unable to realize (yes, there was online gaming since the age of SNES).
Sony
Basically worked over proven formulas to give its boost to PS1 and 2, and succeeded at giving some importance at CG Videos inside the game. They were able to make the PS2 a console that both kids and grownups wanted to play, and there is it main contribution, before PS consoles where just for kids.
Of course a lot of thing are missing, but this is the tenure an article like this should have, so next time, check wikipedia, and some sources instead of giving only your personal opinion.







