They also have tons of data on the users' habits and desires which they can use to inform the AI with each specific user's preferences without them having to state them. Because so many people use Google maps, Gmail etc. It's not just about training data but also operational context. The others lack this kind of long-term broad user insight.

I'm not using Google services much at all and I don't use Gemini but I'm sure it will serve the users well. I just don't want to be datamined by a company like Google. I don't mind my data improving my services but I don't want it to be used against me for advertising etc.