You have to consent to use Google. Also, they allow you to remove all your data (and yes, they actually, really do - they have enough users that a few leaving make no difference to them). By using Windows 10 you consent to Microsoft having and using your data in perpetuity, which is identical to them stealing and owning it, especially as they are implementing this without consent.
It's almost certainly a breach of the CMA but they own enough lobbyists to stop anything being pursued legally.
I don't understand the people who express annoyance at the way Windows 10 has been forced on them, but still go back for more.