> By what right does google set the search engine to begin with? They use their browser's popularity for a competitive advantage and that's legal.

Yeah, but the solution to that is regulation and not an arms race! Google should (and does) allow the user/installer/organization to change the search engine, precisely to allow for competition in the industry.

Browser vendors need to respect that choice. It would be equally bad for Google to be surreptitiously change the Chrome (or Edge) search engine to Google from Bing! It's just bad. Respect user preferences, period.