Yes, there are hard technical problems, but there always have been, and these have been solved when the incentive was there. There is also three economic reaso

Yes, there are hard technical problems, but there always have been, and these have been solved when the incentive was there. There is also three economic reasons: 1. Fabs that make chips are much more expensive now. 2. Intel has no real competition, AMD limps along. 3. Most desktop users are happy with their computer speed, many still run XP