Microsoft's XBox ecosystem
is a fenced pasture, same goes for Apple's app store but I believe that these are only split into regions under external pressure, therefore are outside of the scope of my original rant (I reserve the right to rant about them on another occasion :) )
My rant was about what you call copyright cartels and I called, perhaps less precisely, the content industry. These are the ones who like their sheep neatly separated into physical pastures (geographical regions) and push for crap like DVD region coding and keeping the geographical fences on the virtual pastures of other companies (like Apple or Microsoft.)