Here's something I don't understand. If you want to switch your search engine for Safari on iOS, you open Settings, tap Safari, tap Search Engine, and tap your preferred search engine. Not many users do this, and the conclusion is that the default has an unfair advantage. If you want to make Chrome your desktop browser, you open the default browser, search for Chrome, click the correct result, download the installer,…
As far as I know Chrome is the only thing that has been advertised on Googles famously clean "front page" before making a search.
That tells me something about how important it has been for them to push it.
There's also the way they've used deceptive ads ("download a better browser") to me and many other Firefox users over the years. (No, a browser that leaks my browsing habits to the worlds biggest advertising company while not supporting vertical tabs a decade after it entered the market certainly isn't best for me.)