I didn't say it's free for everyone. I've just simply assumed in general, most of the users can upgrade to windows 10 without spending a penny. Some of my family members don't get to upgrade to Windows 10.
By saying I consider it as a "beta", it means there might be some instability or problems...
In my opinion, people who have used windows 8 might find windows 10 more familiar and accessible. However, PC users who use windows 7 or earlier versions will definitely get annoyed or grossed out.
To be honest, I think it's just a matter of fact that PC users are not used to the big jump of...