There is an article on Forbes boasting the death of the PC market, and a steady decline since the years beginning. I agree that there may have been a decline in server sales, and home computer hardware, but, there is still a need for those industries. Probably like the baby boomers, the main boom is done, but there will be a level off. Also due to the direction of using virtual machines, and lower power consumption markets, it makes sense that hardware sales goes down. There are probably thousands of other contributing factors, but I still think that it makes sense.
