This is important for Google because most of its revenue is still from ads in searches. I try to avoid googling unless extremely necessary. Indeed, I also see a trend of using AI instead of searching webpages. The AI can do the search for you too and it often gives you better information quicker. I think Google needs to be working hard on something new or its revenue can go down quickly.
Yes and that 90% dominance doesn’t even need to shrink entirely for it to happen