True to a point, but...
...as it's been stated previously for the last couple of years, Google doesn't sell your information. They sell adspace. Like billboard advertisers on the internet. Yeah, they datamine, but they don't hand that information off to the highest bidder. The information they're holding on to is worth too much just to get rid of it so everyone else can use it. Instead, they say "hey, we know where to put your product where it'll get the most attention. You pay us, and we'll use what we know to advertise it for you effectively.
It's the way air TV has worked for about decades now.