I don't think you understand what Monopoly is.

Nintendo does not have a monopoly, although they control all the software that is released on the Wii or Wii U. There are other players like Microsoft and Sony. This is exactly what Apple is.

Microsoft was declared a monopoly in the 90s when over 95% of the computers had Windows. ALL the software was written for windows, with very little ports to other manufacturers. Microsoft used it's monopoly of Windows by going after other markets, like web browsers. By putting Internet Explorer in windows, microsoft immediately got a 95% browser share, thus winning the browser wars automatically. Apple can't do anything of the sort, EVER, with a 20% market share, and they can't even try. It's pointless even saying they would try, because it's impossible and makes no sense.