
Check the small print
Microsoft is not sharing your data, it's the internet that's sharing your data...
For example, you can state that you are not sharing your customers data with anyone, but you sell access to the data logs to anyone. You're not "sharing" the data, they are reading your logs and paying you for it. Legally you can document this on page 94 of the user privacy agreement that everyone clicks the box "yes I read the document" to use the app.