[deanhills]

I do not think windows will be provided for free in anytime soon, even though there are free upgrades, windows still receives lot of amount by activation, and it is their bussiness.

I'm not so sure about it.  How about the free Graphical User Interface (GUI)'s from Linux like Zorin?  Like that looks very much like a copy of Windows for me, and it is free.  It still has a long way to go to be as convenient as Microsoft Windows and Apple, but it's a good start.  Hopefully one of these days I can try it for myself.

Here is a review of Zorin 12 to give one a good feel of how like Windows it is:
https://itsfoss.com/zorin-os-12-review/