I'd also add to your statement that the "I'm giving away personal info to use this" implied contract applies easily to free apps and software on a low consequen

I'd also add to your statement that the "I'm giving away personal info to use this" implied contract applies easily to free apps and software on a low consequence device as you discuss, but people pay for Windows. Microsoft shouldn't be able to make money by selling the software AND selling the information of the people who use it.