Who is surprised?
If you buy a PC it has Windows on it. The majority of people are not cocking about formatting a USB stick and fiddling with the BIOS to put Linux on it.
And increasingly the majority of people don’t even bother to keep a PC anymore and just use their phone
Exactly. We used to have a massive chain of shops called PC World, and that eventually became Currys/PC World, and is now just Currys.
The age of computers came and went, and people still need washing machines and TVs. They still sell laptops I think, but if you want anything from their range of “gaming” PCs, they have to order it in, usually from one of the many stores online that will build them for you.
Windows already lost. It lost to Android.