To attack, the attackers will want Mastodon to consolidate. Powers will want few servers they need to exploit.
Small tech companies will launch "friendly" "easy-to-use" proprietary Mastodon instances, which will look community friendly. They will buy up communities that they can.
Major tech companies will embrace, extend, and extinguish to kill off large sections of the network.
"Figures playing games", will continue, cf: I Hunt Sys Admins
https://theintercept.com/document/2014/03/20/hunt-sys-admins/