AT&T sounds like the same thing, Google sounds different because they theoretically claim to not sell your data, and instead sell ads, and Google can show you an ad you want to see because Google knows you so well. It doesn’t precisely sell you to advertisers in the same way.

Anyways, the whole thing sucks for consumer privacy and needs to be outlawed. The problem is that companies come up with unique, tricky ways of exploiting you, and people can never fully understand it without a lot of effort. Someone might be ok using Google and seeing contextual ads, but wouldn’t be ok if they knew Google was saving a screenshot of their browser every second and uploading and reselling it. The first can feel innocuous, the second feels evil.