So the biggest issue here is one that comes up often - the ninja mine. When the chain was first created STEEM was mined. Steemit inc mined a very large amount which some say was for “community development” and they have made promises to never use that stake to control witnesses etc. honestly it’s a silly situation as there is nothing decentralized about making a promise.. but many times the stake has been said it will go to the community.. but hasn’t.
So if Justin bought Steemit inc, and therefore acquired the stake, technically he could control “consensus”, meaning he could put in witnesses that he chose and would do as he wished. But this is called a hostile takeover and actually, I now believe many witnesses would fight back very hard in this situation (I wasn’t sure at the time or writing the post).
So that is where the concern is, as yes normally buying a front end should have no major effects on the chain. This simply sheds light on one of the flaws of Steem that comes up often.
I think we will most definitely know more tomorrow.. there are some key specifics that need to be answered and then we shall see how it goes.