People who own Bitcoin bailing.
Exchanges have nothing to exchange and miners have nothing to mine if everyone's buggered off.
That won't happen en masse of course, and even if it did it wouldn't be all at once, but it seems mind boggling to me how blind all these players are.
They do not operate in a vacuum. They became these hideous succubi off the backs of thousands of little guys and gals who dragged Bitcoin out of nothingness with their passion and enthusiasm.
People who own Bitcoin bailing - indeed, but partially or more counterbalanced by new people that are finally cluing into wonderment of cryptocurrency and don't want to invest their money into coins controlled by a 23 year old with a parade of big banks behind him.
And I have an inkling that if MAHF happens and things stabilize, that additional developers will want to be a part of such an amazing currency, even if some of the best in the world pass.
Of course Core could hard fork a POW change and get an alt coin registered with Coinbase, Gemini, Bitpay etc. possibly. It might take a little while and I don't know if they really have the heart for a move like that or if it is just a passing thought.