Microsoft may not have that cash at that jurisdiction; any big company with tonnes of cash still often take out loans because it’s cheaper to pay it back that move cash from one jurisdiction than another. If the nuclear power company defaults and Microsoft backs the loan, I’m still guessing Microsoft pays back the loan.
What do you mean when you ask “how much money will Microsoft make out of this?” If they’re taking a risk, in the way our economy is currently organised, they stand to lose and they stand to gain. You do realise most nuclear power stations were state guaranteed private companies right? Are you against the nuclear industry, the way we organise our economy, or Microsoft’s actions specifically?
The risk of nuclear is tiny, but real. That’s the way with all nuclear companies. Why should who runs the plant influence the form in which we support any clean up required if the most terrible thing happens (ps: It won’t, but that’s another matter and one I’m sure you’ll want to debate endlessly about too)?
Luckily I sit right next to my home server and can hear when the fans kick in under load. The absence of noise tells me I don’t have this problem :)