Prior to MS Office, there were companies that tried to create product suites that contained Word processors, spreadsheets, and so on. They were all very rudimentary compared to the market leaders in the category. It wasn't until Microsoft decided to buy the market leaders and package them as a suite that we got a great office suite.
I suspect that's Barb. Google is big but it has many products to deal with and it is extremely hard to be a product leader in all. Not only that but search is its main focus. My suspicion is that Google's offering will get better only after it finds a startup they can buy that will give them the edge. Their big advantage is that they don't always have to produce what they need, they have the money to buy what they need to stay ahead.
google got paid a big chunk of money + pseudo anti-monopoly economics + dod stuff
Esentially, THE ad and search company running the worlds top AI would raise too much suspicion once the nudging starts to crawl out of the skin of the early adopters. There's more relevant points on this one but I'm busy, sorry.
The DOD and friends really want to know the people and if google becomes too AI driven, the DoD won't know the people, but versions of them that revealed less because AI gave them more than they asked for on the first or second attempt they phraised their question.
Less content consumed via google means less (ads and other) exposure because AI assistance leads to some useful result quicker, hence the big chunk of money, because there's two sides of a coin.