Elon Musk plans on growing Twitter’s users from 217m (2021) to 931m in 2028 according to a pitch deck seen by the NYT in May https://www.nytimes.com/2022/05/06/technology/elon-musk-twitter-pitch-deck.html
An incremental 714m for context is: 36% of FB’s DAU (1.97b Q2’22) 206% of Snap’s DAU (347m Q2’22) 1373% of Reddit’s DAU (52m in 2020)
LinkedIn acquired for $26.2b in 2016 for 105m MAU source