Sony will not let Xbox Live on Playstation, seeing that unlike Nintendo, they have competent online and dont need help. Microsoft wants their games on Sony, but you know the price. If Sony opens their doors, Microsoft gets the sales and the bragging rights that Xbox Live and Gamepass are gaining more users. People think Nintendo is winning here, but the games are only a trojan horse. Nintendo gamers win, but Microsoft wins as a corporation.
Nintendo has the help of Google for their online: http://gamrconnect.vgchartz.com/thread.php?id=237755