Microsoft also naively assumes that because there is a large market segment for whom privacy does not seem to be an issue (until it is), the rest of us will tag along quietly.
No matter how good an OS Windows 10 might be (or become), as long as it does not allow the owner of the hardware to decide what is downloaded and installed, it will not be an option for me, period. Nor is cloud computing for my company's bookkeeping or my personal files. Period.
Microsoft will choose which market segments it wants to offer solutions and products to. As long as I am part of one of those, I will continue to use the Microsoft products that meet my needs. Should Microsoft decide that those of us who like to create, edit, and save files on our computers using software installed on our computers are not a big enough market segment for them, I will look for other options.
If one of those is doing my personal computing on a personal computer that never touches the cloud (for which W7 will work fine as long as I can get hardware to run it on) and using a more current device strictly for online activities, so be it.