Of course laptops are outselling desktops these days; the proliferation of cheap, affordable notebook PCs in the last few years has been staggering. What was once a technology only available to the affluent and the business user has become accessible to anyone. Furthermore, a mobile, space saving and easy to set-up computer is a very attractive proposition to any sort of user.
However, that doesn't detract from most of these sub-.75K machines being generally shoddily built and largely awful in my experience. Your average Joe simply isn't aware that what 'big, bad computer shop' hawks upon them and ostensibly is a bargain, is very likely to be a complete lemon in terms of performance and reliability.
For the high-end workstation, avid gamer and power user, a desktop system is still going to be the preferred choice for the foreseeable future. Although my old P4 notebook sees a lot of use, I still tend to gravitate towards my awesome Core2Duo, 8800 machine (which cost me less than 600 quid) for any serious activities.