Microsoft is now using a Windows driver to prevent users from changing the Windows 10 and Windows 11 default browser manually or through software.

https://www.bleepingcomputer.com/news/microsoft/new-windows-driver-blocks-software-from-changing-default-web-browser/

New Windows driver blocks software from changing default web browser

Microsoft is now using a Windows driver to prevent users from changing the configured Windows 10 and Windows 11 default browser through software or by manually modifying the Registry.

BleepingComputer
@BleepingComputer that's gotta violate competition law somewhere
@bermudianbrit @BleepingComputer As in they've gotten successfully sued by the US Government over literally this previously XD https://en.wikipedia.org/wiki/United_States_v._Microsoft_Corp.
United States v. Microsoft Corp. - Wikipedia

@nytpu @BleepingComputer well exactly what I was referencing
@bermudianbrit @BleepingComputer ironically the only plausible theory there is compliance with an EU law?
@krupo @bermudianbrit @BleepingComputer It doesn't apply in the EU. Everyone I know who is forced to keep windows going has moved to Ireland (virtually)