Earlier this month Google took over Microsoft as the 2nd richest tech company which means that slowly Microsoft is becoming less popular. With Windows 8 not looking that promising, Microsoft is relying on Windows Phone 8 which is luckily looking amazing however they can't put all of their eggs into that basket.
I think that in the future there will be one shop for everything. For example you want a computer - you go to Apple, you want a phone - you go to HTC, you want a new tracksuit - go to Sports Direct, you want a birthday card - you go to WHSmith and the list will continue until slowly the margin between small and large businesses will be huge. There won't even be a place for medium businesses as the rich companies will have just bought them.