Much of the ruthless development of the x86 was down to competition.
The 680x0 line really didn't have much in the way of clones. If there had been, those manufacturers using 68K would have sourced the best 68K price/performance ratio and maybe we would have seen 68K chips with the same lofty clockspeeds as todays' x86
The days of comparing 68K to x86 are just long gone...*sniff*
