Europe’s top antitrust authority is on the lookout for companies using big data to stifle competition, although it hasn’t spotted any problems yet, according to Competition Commissioner Margrethe Vestager.

It’s good news when companies use data to cut costs and offer better service, the European Commission’s competition chief said at the DLD conference in Munich on Sunday.

“But if just a few companies control the data you need to satisfy customers and cut costs, that could give them the power to drive their rivals out of the market. And with less competition, there’s a risk that there won’t be enough incentive for companies to keep using big data to serve customers better,” she said.

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