You might be seeing it in the same lens as macos for instance, but windows' model is fundamentaly different and that deadline is only for specific cases (that's why they can play the "sign up for backup and we'll expand your time" game)
For instance Enterprise LTSC version of Windows 10 is officially supported until 2031.
A ton of the devices inside these 53% have no need to move away from win 10 in any urgent way.