Economies of scale aren't magic. Games are somewhat resistant to price increases in the face of inflation because we've shifted to digital distribution that you're looking to erode with the suggestion of shipping with physical media again, and you'd still have to pay well more than half of the price it would take you to buy that same media on Amazon. The storage size has grown because they've been optimizing for other factors, and I'm sure they came to the conclusion that it's more likely you'll free up space or buy storage expansions in the future after a price drop than it is that you would buy a game that ran worse or looked worse forever because they optimized more for storage space.