I could go on, but hopefully you get the idea. Could the world afford it?
It's a throwaway culture - and it's been spent for every new generation of chip and storage technology for the last 30 years. Compared to the world economy - and potential profits - the costs are minor, mainly driven by the games market!!
Incidentally, the New Scientist reported on experimental chip technology using
phosphorus coated channels working successfully at 1.5nm wide without any quantum tunnelling issues (which itself seems to raise some questions!). Couple that with IBM vertical integration and there's a few more generations of Moore's Law to go yet.