This action comes a bit late, at the end of the "Search engine" era, at a time when AI responses from many sources are largely replacing the "Google Search". Similar action happened against Microsoft Windows around 2000, just as the rise of web-based apps (online email, google docs, etc) largely made the underlying operating system less relevant to how people use their computers and apps. So I read this as the domina…
AIs are using search indices more and more. Google has the largest, and there is risk of Google using its monopoly in search (in particular their index) to give themselves an unfair advantage in the nascent AI market.