On a related note to my previous post, two of the top-5 largest instance are company owned (pawoo.net by Pixiv and friends.nico by Dwango, who owns niconico). And the admin for mstdn.jp works for Dwango. So from one angle, the success of Mastodon is already strongly influenced by commercial companies (without these three, instead of the much-quotes one million users, there would be only about 400 thousand). Looking at the bright sight, so far this has not ruined the fediverse.