The source would be the organic-traffic and Facebook analytics for all those news publications. Whatever it is now, won't this take it to 0%?

I feel like a similar thing was tried in Europe somewhere a few years ago and then quickly ditched, because all the publications saw their traffic crater.

Looks like something similar was enacted in Australia, and Google/Facbook settled: https://www.reuters.com/technology/australia-says-law-making...

And an update from Google's blog from 4 hours ago: https://blog.google/intl/en-ca/company-news/outreach-initiat...