GroupM: global ad revenue will reach $763B in 2021, up 18.7% from 2019; Alphabet, Meta, and Amazon control 80-90% of the digital ad market outside China (Alistair Gray/Financial Times) TECH REVIEW

Alistair Gray / Financial Times:
GroupM: global ad revenue will reach $763B in 2021, up 18.7% from 2019; Alphabet, Meta, and Amazon control 80-90% of the digital ad market outside China  —  Alphabet, Meta and Amazon have doubled their share of ad revenues in past 5 years, industry estimates

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