Comment by tobias3
Google has defaults as their huge moat. They have Chrome and Android under their control and pay Apple and Mozilla to be the default search engine.
Here in Europe this is mitigated by them having to show a browser/search engine selection screen, but in the US you seem to be more accepting of the monopoly power. Or it seems the Judge in Calfornia seems to think that OpenAI actually has a change of winning this. It doesn't in my estimation.
On the other side Google has a monopoly on Ads. When OpenAI somehow starts displaying ads, they'd have to build their own Ad network and then entice companies and brands to use it. Good luck with that.