Thanks for making my point - for some it's black and white; if we can't have black we must have white. If we can't have unfettered capitalism we must have a "massive restructuring" and go 100% with full-blown communism. No-one, least of all me, is advocating that. A SENSIBLE mix where capitalism does what it does well, and central planning does what it does well can and does work. Look at countries like Denmark - the vast majority have a comfortable and pleasant way of life without massive unemployment, violence and social upheaval. Sure, each person has to pay a little more tax but the kicker is that tax doesn't just benefit a few already rich plutarchs, it benefits everyone in the form of schools, hospitals, transport and so on. Capitalism really doesn't do those things well - countries that have tried to follow that ideological model are in some serious strife, like the UK. Profit cannot solve every problem.
Anyway, we're hardly talking about a massive restructuring. So far it's been a slow piecemeal drift. If the change to sustainable were speeded up 10 times you'd hardly notice the difference. And if you're right (unlikely), and the threat is imaginary, then you've made a better world for nothing I suppose.