And boy, in Australia don't we know how anti-competitive duopolies are in practice.
Yes, you only have to take a look at the effects of Coles and Woolworths on the retail landscape to see just how stifling such duopolies are with regard to competition, fair pricing and customer service. The thing is, they service just our neck of the woods and we do have alternatives like IGA and Aldi... and more recently, online grocery shopping from overseas.
When it comes to operating systems for desktop computers, however, there's only two players worldwide [because Linux and Google's OSes aren't even on the same page as Windows or OS-X].... meaning, if Microsoft and/or Apple want to stick it to us, like MS is doing through Win 8, then there is nobody to stop them and there's nowhere else to turn for a viable alternative, Microsoft knows this, and that's why we're getting "don't call it Metro anymore" whether we like it or not.... whether we need it or not.
To me, that is sheer arrogance at its very worst, and MS is banking on Apple not significantly increasing its market share, meaning the alternative to Win 8 is most likely a previous Windows release... another win, win situation for MS. With virtually all the balls in its court, MS can gradually reduce and/or cease support for earlier Windows editions, thus forcing users to eventually migrate to Win 8 and that gaudy UI, like it or not. Sadly, we have come to a stage where PC's are essential to so many facets of our lives, both business and personal, and MS knows this. Yup, it has us by the short n' curlies and can pretty much do as it pleases.