While my newest build runs 11, the differences between it and 10 for the typical user are unnoticeable, once I changed a few personalize settings most of it is more intuitive, surprisingly enough. After two days of using it the newness was quickly forgotten and nothing has changed for my day to day PC use.
My back up desk PC and laptop both run 10 more than well enough and neither will run 11 because of the restrictions, even though both are strong enough to handle the OS, so it will be Linux or the landfill, and I am not throwing perfectly usable hardware away. I'm also not going to fight with MS by making 11 work through regedits etc, even though I am capable, most of the world won't ever do that either.
I find it hard to believe 60% of the PC world userbase will just toss out their machines and go buy new ones. Most will just run them into the ground and if they get clogged up with garbage they will simply reinstall and go again even if they have to do that every few months.