Any market where the inflation rate has been 0% has seen a natural decline in the quality of the offering. Look at the airline industry - prices have not change

Any market where the inflation rate has been 0% has seen a natural decline in the quality of the offering. Look at the airline industry - prices have not changed in about 40 years. It cost about $1200 USD to fly to the other side of the world in 1980: it’s still the same price in 2023. How did airlines do it? By making the product much shittier in that time.