My guess is that google has been losing the public perception of an innovative company, and started to be felt as a big stable and slow moving one instead, and they’re trying so desperately to take back the previous public perception. They’re seeing the ai hype and the investment microsoft is doing on it. They probably also fear that bing might break their monopoly, and want to fully integrate some ai in their product, to prevent the competition from arising and passing the image of an innovative company.