I think it is also good to consider that it’s the good-but-not-great hardware that has the best price-performance at any given point in time. The newest and best chips will always have a price premium. The chips one generation ago will be comparatively much cheaper per unit of performance. This has been generally true since I’ve started recording this kind of information.
As I think I mentioned in another comment, I didn’t mention Moore’s law at all because it has relatively little to do with the price-performance trend. It certainly is easy to end up with a superexponential trend when you have an (economic) exponential trend inside a (technological) exponential trend, but as other commenters point out, the economic term itself is probably superexponential, meaning we shouldn’t be surprised to see price-performance to fall more quickly than exponential even without exponential progress in chip speed.
I think it is also good to consider that it’s the good-but-not-great hardware that has the best price-performance at any given point in time. The newest and best chips will always have a price premium. The chips one generation ago will be comparatively much cheaper per unit of performance. This has been generally true since I’ve started recording this kind of information.
As I think I mentioned in another comment, I didn’t mention Moore’s law at all because it has relatively little to do with the price-performance trend. It certainly is easy to end up with a superexponential trend when you have an (economic) exponential trend inside a (technological) exponential trend, but as other commenters point out, the economic term itself is probably superexponential, meaning we shouldn’t be surprised to see price-performance to fall more quickly than exponential even without exponential progress in chip speed.