Perhaps another way of looking at it. Microsoft has an opportunity to data mine the Windows 10 users as a way of raising revenue or open new markets. The corporates and institutions are a different ball game on the other hand and where Microsoft hopes to migrate their services to the cloud as means of raising revenue. Furthermore, these types of users can be distinguished by the terms of the licensing meaning MS can target the right audience for data mining.
So yeah, privacy is a real concern for most of us unless you're corporate/institution.