Google should just spin out DeepMind as an independent company and get out of the model building business: just sell tents and shovels as they say, and leave the actual (gold) mining to others.
I imagine it's much easier to have fine grained control over AI search results if you develop and own the AI yourself.
If I were google there's no way I'd leave their AI overviews in place as-is.
AI overview result: images of Chris Elliot as Hanson and an AI summary of the band Hanson.
This is an extension of the long-standing issue where Google just ignores keywords randomly, even when you only typed a few (it'd be excusable if it dropped one in ten, say, and zero out of 3/4.)