Mark Zuckerberg defended Facebook's acquisition of Instagram, which is said to have been a result of the former seeing the latter as a "powerful threat that could siphon business away from Facebook," as per the antitrust probe. Zuckerberg said, "At the time, almost no one thought of them as a general social network or competing with us in that space. In the space of mobile photos and camera apps, which was growing, they were a competitor."
Facebook was also slammed for buying WhatsApp to create a messaging monopoly as well as for owning the four most-downloaded apps in the world. "It strikes me that over the course of the last several years, Facebook has used its market power to either purchase or replicate the competition," a Senator said.