What they really want to stop is businesses selling PCs with pirated copies of windows. And that was quite common back in the Windows 95 days and is still common in some countries.
I develop industrial IoT gateways that are deployed to client sites, often in places which aren’t massively well secured from a physical perspective. Often an attacker could get in with a hi-vis vest and a clipboard.
Hardware attestation allows us to store encryption keys for the internal storage in a way that makes that storage useless if you remove it from the device. Signature enforcement prevents an attacker from booting their own OS on the devices and extracting keys that way (this also works alongside hardware attestation, as the TPM isn’t going to return a valid decryption key unless the expected kernel has booted). Remote key revocation allows us to terminate the device’s connection to our backend if it’s stolen.
If general purpose computers were routinely shipping with all those features turned on to ensure you could only boot a properly licensed version of Windows, and you had no access to enrol new keys, then I’d be with you, but that’s not the reality of things. If I buy a computer, either an Intel PC or an Apple desktop/laptop, I can install an OS of my choosing on it. We haven’t really lost anything here beyond the ability for people to trivially compromise computers without being detected.
In Windows 10, if you don't activate, all that happens is that it displays "Unregistered" in the corner and refuses to let you change the desktop wallpaper (and you can even get around that by rearming the "trial").
I also see lots of reports that updates other than critical/security ones may not be downloaded and applied for unregistered installs, but I'm not sure how true that is (or if it's mostly moot because I know you still get the big spring/fall patches, or at least have historically).
One of them is the "transparency effects" toggle, which needs to be off in VMs with VirtualBox Guest Additions installed for things to work right, and is on by default.
> Kinguin's merchants acquire the codes from wholesalers who have surplus copies of Windows they don't need. "It's not a gray market. It would be like buying Adidas or Puma or Nike from a discounter, from TJ Maxx," Jordan said. "There are no legal issues with buying it from us. It's just another marketplace."
https://www.tomshardware.com/reviews/get-windows-10-free-or-...
These keys may activate just fine, but they are not "legit" in any case. Most turn out to be acquired in illicit ways (MSDN licenses, ...), and a couple years ago here in Germany this led to massive amounts of criminal cases [1].
[1] https://www.borncity.com/blog/2021/03/05/betrug-mit-office-w...
I don't know why a site that is usually reputable (tomsHardware) has gotten the facts wrong on this.
Legal discussion:
> In the EU, software license resale is legal, even if explicitly forbidden by terms of any EULA or other contract imposed upon the parties.
https://law.stackexchange.com/questions/50462/is-resale-of-w...
Home users are whatever.