My guess is click farms with some unknown custom made os that skew that data?
That also might be a source of Linux users hence the relatively high market share of the OS?
Not to mention that India still has a lot of call centers (some for scams) that may use Linux because it’s free (compared to a windows license)
It already exists. There is a company that sells a space heater that mines crypto currency. You get like 50% or the profits which sucks, but you at least recoup a bit of the cost of the electricity to run the heater.
I think we should try to heat ourselves with computing as much as we can since the side effect of computing is heat generation (and minor RF losses). How cool would it be to make a large supercomputer out of millions of homes heating up in the winter?