"Apple's decision in 2006 to ditch the PowerPC architecture in
favor of Intel CPUs meant that Windows could run on virtually every
consumer-class desktop and laptop computer in the world--a goal
towards which Microsoft had worked for more than a decade, as it
promoted the x86 architecture over its alternatives.
"But that success was short-lived, as ARM chips, like Qualcomm's
Snapdragon (which was recently previewed in netbooks at Computex in
Taiwan), stand poised to attack the market share of x86 CPUs."