Competition from TikTok and YouTube is really what keeps it at bay, Carlton testifies. He points to a chart Meta showed in its opening arguments demonstrating that a greater portion of Meta users went to those two apps than Snapchat during its 2021 outage. Ignoring this reality, Carlton says, “that’s just missing the boat. It’s just understating the importance of these very important influences on Meta’s behavior.”
Lauren Feiner

Senior Policy Reporter
Senior Policy Reporter
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Carlton is baffled how FTC expert Hemphill could say users would have been better off had Meta never bought Instagram in WhatsApp. Instagram, he says, “exceeded the expectations that people had at the time of acquisition, so to say that it would have been even better — how can you say that?” With WhatsApp, he adds, Meta actually lowered the price users had to pay for the service, from a dollar a year in some cases, to zero.
University of Chicago professor Dennis Carlton is up next. Carlton’s testimony will attempt to take down the analysis by the FTC’s expert witness Scott Hemphill by pulling apart his theory about the relevant market and competitors to Meta’s alleged dominance. Carlton calls Hemphill’s claims “confusing” and says he generally prefers to see “what people actually do than what people hypothesize they could do” when it comes to consumer behavior.
Boasberg ruled from the bench Tuesday denying Meta’s motion asking him to rule against the FTC even before it launched its defense case. It was something of a long-shot since the trial is already so close to the end, and Boasberg had already said he wouldn’t pause the case while weighing the motion. But the filing outlined some of the key reasons Meta thinks it should win the case, and we’re hearing these in more detail as it continues with its case-in-chief.
The FTC demonstrates that Instagram hit 200 million monthly active users, and launched its video and messaging features all before migrating from AWS to Meta’s internal infrastructure. Meta has used its infrastructure improvements for Instagram to defend against the FTC’s claims that its acquisition was anticompetitive. Shortway also concedes on cross-examination that his start date at Instagram was technically a few days after the acquisition closed, and a lot of the early issues he mentioned were ones he heard from speaking with co-founder Mike Krieger during the hiring process.
Prior to the acquisition, Shortway testifies that infrastructure was one of the “major causes of our pain” and the AWS hardware Instagram relied on “was not able to handle the workloads that we were throwing at them.” The small startup also didn’t have anyone on staff with expertise in fighting spam or conducting content moderation. The acquisition changed some of that within days, he says.
Meta production engineering director Nicholas Shortway, who worked as an infrastructure engineer at Instagram prior to the acquisition, is now testifying about what it was like keeping the app running in the early days. “Everything was on fire,” he says, and since so few people on the team knew how to get the app back up and running during outages or other crises, Shortway recalls carrying a computer with him wherever he went, and fixing Instagram from grocery stores and movie theatres.
Those would have been worth $4 billion today, FTC attorney Noel Miller says. “Please don’t say that,” Acton responds, laughing. “After taxes, it’s two.” Acton departed in 2017 before his stocks vested, shortly after a disagreement with then-Facebook COO Sheryl Sandberg, who wanted to put advertising on WhatsApp.
Acton charges that despite his opposition, Meta ultimately followed through with a business version of WhatsApp that he says diluted its end-to-end encryption. He emphasizes that the launch happened after he’d left the company.
That’s the message a WhatsApp employee relayed in November 2014, after it became a part of Facebook. “Overall, Facebook would first like to push WhatsApp in countries where its obvious that WhatsApp is or can be the leader,” the employee wrote to WhatsApp’s founders. “There was some reservation in countries where Messenger is the leader (and WhatsApp has less reach/engagement but where lies greater opportunity).”