Google Faces Painful Reckoning as Antitrust Cases Rev Up (1)

Google’s antitrust problems are coming home to roost.

While the company has beat back European antitrust interventions by paying 6.5 billion euros ($7.1 billion), US enforcers are now flexing their muscles — and the most painful part for the Alphabet Inc. unit won’t be monetary fines, but blows to core businesses that bring in big revenue.

In a span of three days, a federal judge ordered the company to open up its lucrative app store to rivals and the Justice Department said it may seek to force the tech giant to spin off some of its services to remedy its ...