I've owned and used all versions of windows but w10 is different, I find it unusable.
No; the same company but a different "product team" with a different manager, if I remember correctly.
Windows 8 / 8.1 / 10 are still basically using Windows 7 "guts" (in turn a bug fixed version of Vista) with a different desktop shell for user interface and relatively minor other modifications.
The differences appeared to be that for 8.x, someone thought making a desktop look like a tablet was a good idea and for 10, they appear to be trying to push everyone towards the idea of using online storage for all personal / user data.
They are possibly aiming towards what they do with Windows machines in an all-Microsoft company network – you log on to any computer and get "your" personal data, desktop, files etc. regardless of what actual computer you use.
However, there is a big difference between your work data on a company server and all your personal stuff distributed in Microsoft servers scattered around the world.
If you look at the internal version numbers, Windows been Version 6.x (six point something) from Vista onward.
Windows is slowly migrating toward Linux "under the hood", but that is not visible to you.
The only significant difference between 7, 8, and 10 is the user interface, and the addition of built in spyware.
No, Windows 10 was designed by Microsoft.
its the same people but it has been designed as a form of spyware those days, and you sign away ALL your rights to privacy when you download it, they collect all the info of sites you visit online and ALL your private info and files and sell it to advertising companies and to the highest bidder
Don't know but I'm sure the NSA and DHS put their two cents in it's development.