I agree with jrcornel somewhat. While it would be possible for Justin Sun to acquire a ton of Steem on the market, Steemit is a functioning website with many of the users personal info (email address, IP, etc). If he were to buy up and merge large shares (and platforms such as Steem) with Tron he could create a hybrid system the likes I have never heard of. Especially if he introduced a system (such as Cardano seeks to make) that allows blockchains to communicate with other chains.

Fake it till you make it (even if you have to buy your way into making it, lol).