Successful in their own right perhaps, which is why I am a fan of projects like ethereum, but in the meantime there is no scientific basis or empirical evidence to suggest such projects are secure long term.  Quoting a future that hasn't happened is not a founded argument. The discussion is interesting but you can't move the markets with an assertion and the bitcoin network will not accept an unfounded proposal for significant change, the collective of checks and balances between all the different interests won't allow it-the collective is smarter than the irrational unfounded individual or any faction made up of such individuals (which is a point I make based on a well expressed argument given by Hayek which I have already partially cited/quoted).