[skissane]

It turns out there are two URLs for this, one which only works for Australian IPs, one which works for everybody.

Australia-only URL: https://about.google/google-in-australia/an-open-letter/

Global URL: https://about.google/intl/ALL_au/google-in-australia/an-open...

Alias which redirects to Global URL: http://g.co/australia-letter

However, when I first posted this, Google was showing a message to people using Google Search in Australia, directing them to the Australia-only URL not the global one. It appears since then they've changed the popup to use the global URL.

At first I (and others) worried there may be something intentional and under-handed in this, now I realise it is probably just some sort of Google-internal stupidity. Hanlon's razor strikes again

[dang]

Changed now. Thanks!