That doesn't help the situation much, even if it were true. If a phisher creates a fake Google domain, how many users will go, "Aha! I was about to login using

That doesn't help the situation much, even if it were true. If a phisher creates a fake Google domain, how many users will go, "Aha! I was about to login using my Google credentials, but then I remembered Google only asks users to login to *.google.com domains, so I know this is an attempted phish!"