"The issue is that simulating a computers design require a lot of computational power. The advances made in going from 65nm to 45nm now moving to 32nm were enabled by computers that could better simulate the designs without todays computers it would be hard to design the fabrication systems or run the fabrication system for the future processors."

I believe (strongly) that the bottleneck is figuring out how to make 45nm and 32nm circuits work reliably. If you learn how to do 32nm, you can probably get speedup just by re-using the same design you used at 45nm.