One of these days, and it isn`t going to take them long, they`re going to fix the ratings via some kind of transistor trap, manufacture the processor setup to a designed spec - designed to trip if you go over a limit. Instead of testing a batch and rating them.
Basically to price fix the market, and prices will go up is severe stages.
They`ll say it`s "to safeguard the life expectancy of the processor and to ensure a constant stable environment for the user - including a more comparable platform from pc to pc" - i.e./e.g. base speed = $150, next 150mhz $200, next 150mhz $300 - i.e. the prices are market fixed.