A "loose knit crew of rivals" are eager to help the government with its anti-trust probe of Alphabet, Inc., according to the Wall Street Journal. Competitors of Google are doing everything they can to try and help the Justice Department in their probe, including readying documents and data in anticipation of meetings with regulators.
And anti-trust probes are often more straightforward and direct in the EU versus the United States because the European commission has the power to launch an investigation and to decide on the fines and remedies by itself. The company then has the option of appealing in court, but the reputational damage is done and the appeal can take years. In the US, however, the Justice Department would have to bring the lawsuit in a federal district court.