I'm reading this on a non-Chrome browser based on Chromium, the project Google gave freely to the world that enables competitors to reach hundreds of millions of users

You can look up details of the lawsuit, but the idea is that Google paying Apple to be the default search engine prevents other search engines from competing with Google search. The default search selection has been shown to be quite important. Anti-trust law is built around the idea of maintaining competition - “monopolies” aren’t inherently illegal.

Every company does this though. They pay to be the exclusive or official XYZ of some company or event.

For example, Bud Light being the official drink of the NFL.

Or Coca-Cola being the exclusive drink that can be sold at the Olympics and many other sporting venues.

I’m summarizing, the details of the suit are widely available.

Bud lights and coca colas activity isn’t enough to suppress competition. Google’s is, and the U.S. justice system clearly thinks so.

Bud Light has a 9.7% market share.

Chrome has a 67% market share. You also missed the entire point of defaults being important.

Every company isnt a monopoly under antitrust scrutiny.