If IBM is able to manufacture faster G4 processors in numbers and unless Apple has a restrictive exclusivity contract with Motorola, maybe Apple could explore the possibility to use chips from both companies. They say that nothing is impossible. Having faster G4s from IBM and slower ones from Motorola could even open an opportunity in Apple's product line. I am no Apple executive or engineer to know all the dirt about this. The bottom line is that if megahertz hurt Apple's image for speed, something has to happen.
Education is usually a prime way to get almost anything done.
If you educate customers and explain in simple terms why a 500 MHz PowerPC can beat a 700 MHz Pentium, they have a better chance to understand. When I mean education, I mean more than developer notes and papers addressing the issue for industry insiders. I really mean broader audiences to make it clear that there is more to computers than megahertz. Mostly because benchmarks and Photoshop tests do not do the trick, no matter how credible they are. Something has to prove it to everybody for the last time.