Mark Zuckerberg was the leadoff witness in an antitrust case against Meta – one filed under the first term of the president he's now cozying up to.

Mark Zuckerberg floated the possibility of spinning off Instagram from his social media empire amid rising regulatory scrutiny of the technology sector and an increasing concern that the photo sharing app was “cannibalizing” the success of Facebook.

The Meta chief executive testified in a landmark antitrust trial that it was business as usual when he bought rival apps. He denied he was trying to snuff out competitors.