Google can be REQUIRED to give users A CHOICE of Search Engines.
Don't they, err, already do this?
I mean a search engine is literally just a website and absolutely nothing prevents you from just going to duckduckgo.com or bing.com or wherever. Don't think Chrome prevents you from accessing other search engines in general, and last time I used it (admittedly a while back) it had a setting to change the search engine used by default if you just typed something into the address bar.