People are creatures of habit. There are people still using Yahoo! for no reason other than it's what they are used to. For many people, buying Intel is the same thing. It takes years to win those people over. (and usually the argument that ultimately wins them over is 'everyone else is using it', rather than the economic one) Those of us who are early adopters jump ship as soon as it's obvious there's a better option, the masses move at a much more glacial pace.
Sure, people are creatures of habit. But this isn't Yahoo vs Google we're talking about. People are going to be throwing down hundreds or thousands of dollars per CPU, and the differences are not remotely subjective.
