Many moons ago, the European Network providers made a collective statement to Nokia, which basically stated that they cannot compete with Android and Apple with the Windows Phone 7 platform, this is still probably true with Windows 8.
We are not going to discuss the pros and cons of Windows Phone 8, there enough articles on that already. One reason why Nokia phones may not be selling though, is because Android and Apple have a large loyal user base. Anyone planning to buy a smartphone will base their decision on what their friends, relatives and work colleagues have. All the buzz is around these two platforms.