Whatever is left after bricking it, I suppose?
You do know that there were actual lawsuits against Microsoft over the Windows 10 auto upgrade right?
Even assuming that issue was overblown, I distinctly remember that Catbert-style perma-nag message appearing on each login asking me to upgrade. Microsoft doesn't even deem its users worthy of a simple "Don't bother me again" close window.
Let us conservatively say about 10% of the 300 million people who supposedly got the Windows 10 update didn't actually want it. That's about 30 million folks who would disagree with this notion that Microsoft "lets me do whatever I want with my computers and my software".