if he want steem to be a tron token he can do. its up to him.
He can also use the Steemit domain for what he wants. Make a tron site, gamble site or porn out of it or what he wants.
But he only owns Stinc. Not Steem.
And if he does something without comunicate, a fork will be ok IMO. he owns only 25%. Like if he votes own witnesses in to fork steem.
75% are hold by communty of Steem.
Keyword " token swap"
RE: T Minus 2.5 hours. DLive presentation by Justin Sun new owner of Steemit, and witness forum to follow at minnowpond.org.