Banning anti-competitive behavior (which is what antitrust laws are for in the first place). For instance: a company actively blocking competition (e.g. coffee machine manufacturers that make it impossible for people to buy pods from another brand).

Again, I am probably biased here, but I don't see much anti-competitive behaviour in the search engine space. If people have a clear superior alternative to Google, then by all means please share it here.

Even during the brief period where I used duckduckgo, I was constantly finding myself typing "!g" to get results from Google as they were just consistently more relevant.