Their revenue growth has outpaced user/activity growth for some time.
This position will secure them so long as we can find a use for data. And right now, data is something we use everywhere.
They can continue to use it for advertisement, or they can pivot or expand to new market, more nefarious or for the good of everybody. They could sell it to government for mass surveillance or they could use it to help scientist find a cure for a disease. We can always find a use for data.
So I think their goal is to hoard more and more data, and make it has accurate as possible. Google for me is neither a search engine company or an advertisement company anymore. Their core is data hoarding, and they make profit using this in several ways, advertisement being just one of them.
Previously, you could be logged in in the browser but not into Google's website, or logged into Google's website but not into the browser. That was confusing for users ("It's asking me to log in to Google? But I'm logged in already. The hell?"). This change synchronized the login experience so if you're logged into Google, you're logged into the Chrome browser and you don't have to think about them separately. Users don't like logging in, so anything that can be done to safely minimize the amount of that necessary is seen as a user experience gain.
Google always had a CIA connection. You do the math on how this works and what it means now that you can see it all unfolding like everyone else can. They want total control over your mind and barring that, they want total control over your behavior one way or another.
What can't corporations do? They can't force people to buy their products or pay their bills. Governments can, though. It's actually the only tool in the box. Corporations would love to gather and coalesce the information and then have the jackboots do the violent stuff to suppress and subjugate. The very definition of fascism.
https://pando.com/2015/07/01/cia-foia-google-keyhole/
Search "In-Q-Tel Google" for more.
If articles like these are the basis for your conclusions, really take a step back. I went down this route a little some years ago, and really just felt miserable for no good reason.
Now the next part of my suggestion is going to sound rough for a second, but please take it seriously. Check out a book called "The Information Diet" by Clay Johnson. After reading (it's a really good book, and helped me a lot in avoiding this sort of stuff), watch a ridiculous conspiracy show on TV. My favorite recently was about whether mermaids were real.
Listen to the techniques they use in there -- By saying "A relates to B" and "B relates to C", they ask "Does A relate to C?" Even though A and B relate only through something remote, and similarly for B and C. But, imply a conspiracy and suddenly the remote links seem like a cabal of some sort. It's a manipulative practice to get eyeballs and clicks, and we have to identify it as toxic before we start taking it in.