Google’s ad tech dominance sparks breakup threat

Google has been accused of abusing its dominance over advertising technology to crush competition, as the European Union fired off an antitrust charge sheet that strikes at the heart of the US firm’s sales model and threatens a breakup of the lucrative business.

Margrethe Vestager, the EU’s competition commissioner, said the Alphabet unit had favoured its own ad exchange programme over its rivals and bolstered the company’s central role in the ad tech supply ...