definitely possible.
and there comes one of my favourite quotes from one of our professors into play (hes definitely the best around here, was even at yale for a few years). he said that stock markets are one of the most dangerous tools in the world (apart from nuclear weapons, guns and murder and all that stuff). because if someone steals something, its not overly bad, because wealth was just shifted. its still there. stock markets flat out DESTROY wealth. and that has effects on everybody.
and thats why we have to find a way to keep it at bay. maybe perfectly free markets without intervention work. but at what risk? i for myself would rather have a "heavily" controlled market (obviously negating some of its strengths too) that has less variance and profits in it than this boom-or-bust type of thing thats dominating right now.
and maybe, markets have to evolve a little further. with all the new techniques, HFT and pretty much the "whole" world being traders, traditional markets might not be working. over centuries, there was almost no net inflation over several years as inflation periods were followed by deflation periods. now we just have a stable inflation almost always of a few percent. this "pressures" people to make debts, because they wont get any cheaper, and prevents people from having it at home or in a savings book. compound interests make it neccessary to grow every single year, because otherwise you lose wealth. what about a deflation every other year? what about no compound interests?
i know i was all over the place in that post, but my message is, that economies, exchanges, government and the financial service industry have to find a better way to solve all these complex issues because they have effects that trickle down to all kinds of social issues all over the world.