some copy from Microsofts "The Future Starts Now" campaign:
"
Learning and growing with you - The more personal experience of Windows 10 includes Cortana, your truly personal assistant. Cortana works across all of your Windows 10 devices to learn your preferences, offer suggestions, set reminders, play your music, answer questions and more. Welcome to a future with Windows 10. It can recognize you, respond to you and even learn with you. So you can create and share in ways you never thought possible. Now is the time to do great things. #Windows10
"[1]
It's not like it's hidden in their terms and conditions. And, bluntly, I'm assuming many people reading this are working on similar technology for smaller companies. But, to paraphrase Nick Naylor in 'Thank You For Smoking', you just need to pay the mortgage, right?
Additionally, the conversation on this page seems to betray that most of us didn't read the memo that the concept of privacy has changed and now no longer includes concepts like, "You only get to know things about me that I disclose to you." That has now transformed into what might be captured in the sentiment, "You may not use what you know about me in any way explicitly disallowed by the terms & conditions". I can't find it now, but back in the day, wayyyy back, Brin and Page made the argument that one day people would trust their personal information to companies the same way that they trust their money with banks. This is that vision realized.
[1] http://blog.pcm.com/2015/07/29/windows-10-the-future-starts-...