Investors were caught off guard by the sudden U.S. assault on technology giants last week, but behind the scenes, the industry's biggest companies have been preparing for this moment of reckoning for months.
They have hired lawyers and built up their lobbying shops in response to antitrust investigations that have been well underway in the European Union, and which are just now getting started in Washington.
People close to the companies said they have long anticipated U.S. probes. And while these tech giants will need to bolster their defenses for added scrutiny closer to home, Amazon.com, Alphabet's Google, Apple and Facebook all have been working publicly and behind the scenes for months to make their cases for why they help competition, rather than harm it, and already have formidable teams in place.
As news of the federal and congressional investigations roiled the companies' shares this week, lawyers and executives working for Amazon, Facebook and Google were taking a wait-and-see approach, according to people familiar with the situation. Google hasn't discussed with the Justice Department, which is set to investigate the company, details about what antitrust officials will focus on, one of the people said.
The search giant, for its part, has in the past faced intense antitrust challenges in the U.S. and elsewhere, and already has a playbook for dealing with them.
The government agencies themselves haven't said what they intend to look at, and actual inquiries may not materialize.
Still, the move toward formal investigations, coupled with a new effort from lawmakers on the House Judiciary Committee to look at antitrust violations by the tech giants, is a clear escalation from the political rhetoric of the past year, led by U.S. President Donald Trump.
"Trump's pretty clearly made some comments about this," said Rob Atkinson, president of the Information Technology & Innovation Foundation, a think tank that lobbies against excessive tech regulation. "Over the next 18 months you're going to see FTC and DOJ certainly be making a lot more noise."