I'm not sure what's more amusing/depressing: that these people believe any shift on the order of magnitude the book described in the article predicts will permit continued functioning of society in a way that supports these individuals' wealth, or that these individuals believe that their wealth puts them in a "cognitive elite."
If liberal democracies fall it won't be because they've been replaced by well-functioning corporate city-states; it will be because we've gone Mad Max. And then no amount of bitcoin or "private" land in New Zealand will protect these people.