“Seems there’s grounds for a lawsuit against Microsoft, if it manipulates your personal property without authorization.”
That is the problem. And Microsoft invented the contract model other companies use... In the License Terms Of Use contract it clearly states that the product is NEVER yours or your personal property. It always belongs to Microsoft and is never owned by the consumer outright. It also states they can terminate or adjust their product when they like and there is nothing you can do about it. You agree when you use the product License.
But does that really apply when you’re doing nothing other than partitioning your own computer to allow for a secondary operating system, like this guy is doing? At least, that’s what I understood him to say. And the Microsoft software just comes in & obliterates it when an update is run. No one is modifying their software, they’re just trying to run something else concurrently.