It's not gonna affect their bottom line though. Microsoft are doing it because they know they can get away with it and drag the bar so low that they'd make RealNetworks circa 1999 look like privacy-respecting saints.
Your average Joe cannot afford the second mortgage needed to finance a MacBook purchase, and they'd have an aneurysm if presented with a Linux terminal.
And don't even get me started on business and professional use. Many businesses rely on proprietary or even bespoke software that doesn't run well, sometimes not even at all on Linux. FOSS alternatives are often dogshit. And before you dispute me on that fact, can you name one web designer that would use Affinity Photo, GIMP or PDN over Photoshop? Or could you name one person that prefer AbiWord, OpenOffice or LibreOffice to Microsoft Word?
PC Gaming is one of those use-cases that has evolved by leaps and bounds... until you realize just how many multiplayer games rely on a form of anticheat. Many of these solutions are straight-up incompatible with Linux.