This is one of the things that make me go nuts. Microsoft decided that users must download Windows 10 whether they want or not. More than 3 GB (and up to 6 GB) automatically downloaded "just in case". And the worst part is that it's not easy to block.
This is absolutely disrespectful of the user and, I suppose, also illegal. Damn, it's not so difficult to understand: I am the owner of the device and I decide what I want to download and install!
And then you are asking me why I use Linux?
As a side note, today I've discovered that Google does the same on my Android phone with the app Play Store. Where has the "don't be evil" gone?
Cover image taken from here.