I have pictures from 2012 (I think) when they had the entire grand hall of Paris' Gare de Lyon hung with dozens of huge Chrome banners.
That alone must have cost them tens (if not hundreds) of thousands of Euros.
That said I think the web's under Google's thumb screws (AMP, mail, DNS, browser-almost monopoly, etc) is in a bad place. But they did invest a hell of a lot in pushing Chrome.