Honestly they might get wiped out the moment a big corporation in the financial sector decides to launch a competing platform.
Just think about it, we are putting up with lag and huge delays from Poloniex who are struggling to scale up, and so many people are storing serious money there without having any certainty that the entity behind the platform is in any way solvable or can be held accountable.
The moment a long standing, renowned Corp joins the game, I expect people will move their money there for reassurance.