Aaaand, one very important thing, - if, for some reason, regular chips would become unavailable, there is a chance that new, arguably better - but certainly better in some applications - machinery might emerge. Like proper photonic processors! I had a dream vision of photonic logic and even power lines, with smaller losses and better wireless transfer, safe sockets (due to total internal reflection in absence of matching prism), low crosstalk and signal leakage, no corrosion, etc. And very, very fast chips. To cross the death valley, competition with transistors should be won, and that’s no small deal, unless something happens.