Is AT&T the new discount carrier now that T-Mobile has been buying up spectrum for the last decade? I just moved my whole family off them just to consolidate on

Is AT&T the new discount carrier now that T-Mobile has been buying up spectrum for the last decade? I just moved my whole family off them just to consolidate on a carrier I like a lot more, and in the process noticed that they actually had the cheapest per-meg data rates, by kind of a lot. It wasn't enough to keep me, but it was interesting.