At some point, I wonder if it'd just be cheaper and easier to put our supercomputers beneath the earth's crust. :)

There's a billion $$$ startup idea. Let's get some people together to start serious superconductive computing below the Kola Superdeep Borehole: https://en.wikipedia.org/wiki/Kola_Superdeep_Borehole

Well, apart from the Russian-Ukrainian war going on presently. :(

So plan B, need to put a superdeep borehole somewhere else. Maybe at the KTB borehole in Bavaria?

https://en.wikipedia.org/wiki/German_Continental_Deep_Drilli...