They now have to compete against ChatGPT and they are late in the game. To make things worse, their reputation suffered a great deal with techies who despise their whole image and are actively trying to "degoogle" their lives. This may well be the beginning of a slow downturn since these people have an influence on the tech choices made by more "normal" users.
What if it doesn't even matter if they can keep a dominant position of their search engine?
These antitrust cases appear to be just a sign of a much larger pile of trouble ahead for Google.