Comment by JimDabell

I would shy away from calling them a majority myself, but it’s a fair point.

Remember that email involves at least two parties. It doesn’t matter if I use a non-Google provider, I still have to follow all of Google’s email rules, or email will be useless to me because I wouldn’t be able to send mail to Gmail or Google Workspace users.

In a practical sense, Google have very direct control over almost all email.