It isnt that microsoft and sony have third party support, more that third parties have customers support on microsoft and sony consoles.
Nintendo fans are inherantly stubborn when it comes to non-nintendo games and are perfectly willing to sit by and watch the good ship wiiu sink.
The highest rated launch games for wiiu were all third party, it had a great chance to repair charred bridges and get third party on board to make a more broadly appealing lineup, but the customers just arent there, and so third parties got up and left.







