Pre-installed is the biggest factor. Go to Walmart or best buy. You’ll find windows and Mac and chromebooks.
I don’t think it’s “laziness” per se, but rather people aren’t that technically inclined. It’s too much of a challenge for the average person especially when they don’t understand the benefits.
X11, because I haven’t figured out how to get Wayland to work with my Nvidia 1070. One day I’ll put in the effort, or finally upgrade my card. But for now it’s fine