Apple was compelled to go with Intel for a number of technical reasons. PowerPC was not able to provide the low heat and low power CPUs required to address the challenges Apple was facing from Intel based Windows machines.
Yeah, and I'm not pushing support behind PowerPC... I never dealt with it directly, and I frankly don't care which company comes out on top. But really ARM is a better example, to the point that today I wouldn't be surprised if they have more device shipments than Intel.