Top 25 Companies Earn Two-Thirds of Global Ad Revenue: GroupM Report
Tech bashing isn’t exactly a market, but it’s definitely a growth industry. WPP’s GroupM media agency is adding heat with a report that the top 25 media suppliers earn 67% of ad global revenue, up from 42% four years ago for the same companies. The better comparison would be the top 25 suppliers four years ago vs the top 25 today, but there’s no doubt that concentration is up. Plenty more here on other aspects of the industry.