It was shown time and time again, defaults are what most consumers will use even if better alternatives exist. A ton of Bing market share comes from Edge pushing it so hard.

Google would not spend all this money with Apple/Firefox if they knew that customers would use Google without being forced into it. Since they won't change search engines, Google realized they need to force it.

Gen Z has been pretty good at ignoring the default and using ChatGPT for everything.