It is incredible looking back to 2005 and realizing that the world has 1.5 billion MORE people today and the number of internet users grew by ~5.5 billion. Doesn’t really explain Google’s changes - still remarkable how different the internet was that Google built its search platform around.
I haven’t tested it, but did you look at Damselfly? The documentation seems to suggest you can do it: https://github.com/Webreaper/Damselfly/blob/master/docs/Multi-user.md
https://damselfly.info/