I could definitely see a benefit for them from a legislative perspective. By federating with other networks, they're able to signal to lawmakers that they're no

I could definitely see a benefit for them from a legislative perspective. By federating with other networks, they're able to signal to lawmakers that they're not _really_ a monopoly, they're willing to pay-ball with others. Also, isn't the 100M user figure disputed, because it's counting existing Instagram users or some such?