Yes, there were some cases that confirmed the validity of "clickwrap", unfortunately: https://www.elgaronline.com/edcollchap/edcoll/9781783479917/...
I don't know what the hypothetical penalty would be for mere use contrary to EULA, though. It would be breach of contract, and presumably the court would determine actual damages, but I don't know what cost basis there would be if the software in question was distributed freely. However, fine or no fine, I would expect the court to order the defendant to cease using software in violation of EULA, and at that point further use would be contempt of court, no?
Fair enough, that is quite unfortunate.
So I've always avoided using the Windows Store on my Windows machines, I think I managed to get WSL2 installed without using it lol.
So I'm not sure on the details, but do the steps on https://www.cursor.com/how-to-install-extension bypass clicking "I agree" since they just download and drag? Because from what I can tell, the example in https://www.elgaronline.com/edcollchap/edcoll/9781783479917/... is because the customer clicked "I agree" before installing.