The world’s top-five largest media owners - Alphabet, Meta, Amazon, Alibaba and ByteDance - command more than 50% of all global ad investment, according to the latest WARC Media forecast.
Alphabet is the world's largest media owner by ad revenue, accounting for a quarter of advertiser spend across a portfolio including Google Search, the Google Display Network and YouTube.
This figure is before traffic acquisition costs (TAC) – money paid to publishers for hosting Google ads – and includes revenue from DoubleVerfiy, an ad tech component which does not make share calculations truly like-for-like. But, however sliced,...