I was just discussing the new Intel positioning with someone the other day. The problem with Moore's Law is that although it remains valid in an engineering sense, even though in the strictest sense of the term it's not a law at all, it no longer can be used to move hardware. The average desktop worker is nowhere near maxing out even a 500Mhz processor with a decent amount of RAM. The diminishing returns just don't merit the capital expenditure right now.
That's why Intel is focusing on other aspects of the Centrino processor(built-in wireless capabilities and better usage of laptop battery power). The problem is that no one upgrades to get better battery usage and the infrastructure to take advantage of the wireless stuff isn't really out there and very few companies want to take the risk that they'll overbuild wireless capacity.