"The use of the plane metaphor was to illustrate a point and not to be taken literally."
Understood - but the point of where i was going with the 'sometimes i wouldn't even choose to fly the plane of life' quip (also not meant to be taken literally) is that the instinct whereby we react to what you accurately point out are the perennial boom / bust cycles associated with free markets by systematically purging them of all their associated risks is also the same instinct whereby we sacrifice our civil liberties in the name of security. The economy, like life itself, is not just choosing to fly or not to fly; the risks are built in, no matter which approach you take, and when we try to insulate ourselves from them we usually end up in as equally a compromised position as that in which we began back when we still had all our liberties and faced the initial risks. You reach a certain point where you can't eliminate risk anymore, you can only displace it, shift it around.
So when you say we need to modify capitalism until it becomes something else, i can't help but adopt a skeptical stance and wonder what direction youre suggesting we move in . . . ? Managing markets is one thing, entirely transforming them raises serious doubts (as well as all sorts of unpleasant historical associations . . .)
maybe i'm just jumping to conclusions about what youre suggesting, though . . .