GroupM: Google, Facebook, and Amazon "triopoly" grew its share of US digital ad market from 80% in 2019 to 90% in 2020, and now collects 50%+ of all US ad spend (Wall Street Journal)https://t.co/tcq8l9b3KWhttps://t.co/UViSJBuw67
— Techmeme (@Techmeme) March 19, 2021
from Twitter https://twitter.com/Techmeme
March 19, 2021 at 11:51AM
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