Windows 8 and 8.1 failed because it forced people to learn the quirky Modern tiled interface, which almost everyone hated because it was just too different than the interface of earlier Windows versions. As such, Windows 10 on desktop and "conventional" laptops default back to the Desktop user interface, which means people used to the interface of Windows XP, Vista and 7 can upgrade to Windows 10 far more easily.
sshhhh!!
No one talks about Vista!
Yep, Microsoft screwed the pooch on Windows 8...and they not only know it but are trying their best to rectify it by their free offering of Windows 10!
When they develop an up to date OS that actually uses the advancements that hardware has made then folks might update. Won’t hold my breath!