With the strongly declining sales, I can see MSFT carrying on with the policy of selling at the higher price as the market is already Sonys in Europe. Soon Sony will have a 60% market share of current ben (ps4/wii U/XB1) and i can only see this climbing. Eventually the sheer size of the PS4 market will drive itself with MSFT having a choice......spend big with no guarantee of success or bow out. I can see the later happening in the not too distant future.
2015 - year XBOX stops selling in Japan
2016 - year XBOX stops selling in Europe/China
Its going to be a 2 market console for MSFT - US and UK.