This isn't like an app where you can just toss it out for people to play with. The Steem/Steemit platform has a lot behind it that some users may not appreciate. Ned and Dan had some history that gained them enough respect to attract people who invested some serious money in Steem. Others put resources into mining it when that was still possible. The only clone I'm aware of is Golos that was officially approved by Steemit Inc to set up for Russian speakers. It's still active, but much smaller than Steemit. We've seen how long it's taken for Steem to get to a million accounts and without some known backers that would be much harder.
Of course some people don't like certain things about Steemit and would do them differently, but they may be better off trying to do that within the witness system.
So I'm basically saying I wouldn't.