why do you think that a multibillion dollar company would sell your files? also, what's wrong with them scanning your computer? are you hiding something?
They wouldn't sell the files themselves, but not only will they sell TONS of other information, they're absolute cucks to the government now. The NSA can now warrantlessly break into any computer they want legally thanks to Microsoft, and then because of their recent rules literally any local PD can request your data from a list without a warrant. Your entire computer is theirs at the click of a button, without a warrant, for any reason, and you can't sue them for it EVEN IF THEY MISUSE THE DATA AND forget YOU UP because it's the law.
And they will do this selling as well because data mining is insanely profitable. Microsoft can do not even full content scanning, just meta-data skimming to be able to sell targeted advertising to you and make hundreds of millions of dollars. It costs them nothing.
Also holy stuff, again with this stupid argument? I suppose you wouldn't mind Microsoft scanning through every bit of your internet communications? Selling your emails, place of work and residence, political leanings, everything private you've told people online, stuff you buy online, your banking information, credit card numbers, debit card numbers, PIN numbers, login information, lists of websites you've visited and are registered to, etcetera to random 3rd party companies who have absolutely no accountability? Maybe to the government? Do you seriously think that's an OK power to have, that it somehow magically won't be abused because reasons? Everyone has something to hide, even you.
Not what it says.
It is what it says. What you quoted was only part of their privacy policy, they take data you willingly give them, AS WELL AS other things.