Gerry asks "How have Microsoft forced Windows 10 upon me?"
If he had read this thread and allowed it to penetrate the see-no-evil barrier that he has erected, he would not be asking this question.
Force and fraud are the same thing. They are both illegal because they wrongly deprive others of their legal rights. By means of deception, starting with mislabeling the update, Microsoft has fraudulently forced Windows 10 upon their customers.
This is more than mere legalism. My greatest concern in all of this is that I will power up the computer some morning to find that Win7 has been replaced by Win10--that somewhere along the way I mistakenly clicked on something that "authorized" them to do so, or that the same bunch of rogues who slipped us the Win10 nagware under false pretenses, and kept bringing it back over customer protests, will simply replace Win7 with Win10 and then dare us to sue them.
Their rewriting of user agreements to allow them to do what they want is consistent with that scenario. If the issue reaches a court, however, the first thing that will come up is that user agreements are increasingly acknowledged to be a one-sided joke, and the larger question will be whether the customer has a property right in software that he licensed in the reasonable expectation that the licensor could not radically change the license terms, including disabling or replacing the software so that the licensor could make more money down the road.