i doubt steemit could make a dent the way it is ... but it's actually Eos / block.one(?) Voice claiming to go after facebook and mister Justin Sun announcing a big announcement on the day the announced themselves and then this happens ... so best guess is he wants something against what he maybe sees as one of his big rivals and this thing here is already well-developed (software-wise) and probably came at a bargain , lol, but i doubt we'll ever see the details of that deal in public in the land of decentralization-mythos , in the end the only decentralized thing is still the classic chains with their thousands of nodes but even there its a select group developing.
IF and thats if steemit were an actual 'thing' and it would be anything to facebook, not even a threat, then zuck would have bid on it, just like he did instagram
the fact that he never even blinks at it says plenty ...
Atari (back in 'the day) killed themselves trying to be Sony or Nintendo while they simply could have been Atari
competitive psychopaths (i think they call them CEO's or something) can be freakishly weird people with strange notions about winning to the point of self-destruction (with ample collateral damage :)