Article makes case that Centrino's Wi-Fi component enabled Intel to sell more laptops and make more money: The article blurs the line a bit between whether there was more money to be made via Wi-Fi itself (where margins are low, but Intel might have picked up a buck or two per laptop chipset) or by selling more laptop chipsets because Wi-Fi was an included option.
For instance, Jimmy Chang, an analyst at U.S. Trust Corp., which manages $80 billion and owns Intel shares..."Intel makes more money bundling the Wi-Fi chips along with the microprocessor." I can see how you could interpret this statement either way.
People are spending more for Centrino, the article says at one point, but that's just at IBM's site. Centrino and Pentium-M computers have a huge price range, and I don't know that anyone's done a feature-for-feature, dollar-for-dollar comparison.