Couldn't we just go back to the older transistor densities? Forget about 5nm and instead keep tuning the 32nm process (or whatever the last reliable one was) fo

Couldn't we just go back to the older transistor densities? Forget about 5nm and instead keep tuning the 32nm process (or whatever the last reliable one was) for yields and power efficiency. Modern processors are faster than Sandy Bridge, but not by an overwhelming amount, and it's not clear how much of the improvement is due to smaller transistor sizes now that they no longer result in clock speed increases, rather than design improvements that are independent of transistor size. There has to be a market for something with 80% of the performance and 2000% the reliability.