So you're saying we should show all users www., just because that one site in a billion that shows a different non-www. page, for that one user in a million tha

So you're saying we should show all users www., just because that one site in a billion that shows a different non-www. page, for that one user in a million that would even notice that difference? Chrome is a browser for the mainstream people. The feature you're asking for is for power users and extreme edge cases.