Well, ehm, depends on how you look at it. Personally, if I had enough money to buy the Steemit Inc stake, I would do my own research before sending the money. I would then already know that the stake I was buying was promised to be exclusively used for the development of the Steem eco-system. Since the softfork now only codifies that, I would not be fucked.

I would think Justin did his research and used this knowlegde to negotiate a fair price with Ned. In that case, he should have expected there was a good chance this would happen, since after all this is a DPOS consensus based blockchain and this is how things work here.