I do not think this is the correct view. Google is an ad company and they are constantly improving that part of business. They are not standing still in that s

I do not think this is the correct view. Google is an ad company and they are constantly improving that part of business. They are not standing still in that space. And, sadly for us, Gmail, Android, Chrome and YouTube are critical pieces for ads business. Yeah, they spend some money to build random things but that is just that lay people have illusion that Google is not an ad company - ie they are inventing something. In short, releasing these products is necessary so that there is a perception that Google is not an ad company.