This idea is already part of how inflation is measured. It's called Hedonic Quality Adjustment: https://www.bls.gov/cpi/cpihqaqanda.htm https://www.bls.gov/cpi/

This idea is already part of how inflation is measured. It's called Hedonic Quality Adjustment: https://www.bls.gov/cpi/cpihqaqanda.htm https://www.bls.gov/cpi/cpihqaqanda.htm But I also think that this is difficult to get right.