Selfish Greed Subverted Rational Capitalism
Capitalism can work quite well when enlightened self-interest replaces unenlightened greed. Look at how Finland has used capitalism in a fair and productive way.
If you look a little more carefully at the facts, I think you will find that it is the failure to regulate base and unenlightened human greed that underlies the current problems. In America the real criminals are those who pushed for ever more de-regulation, and they are the greediest among us, i.e., the ultra-wealthy libertarian oligarchs, the neolib/neocon oligarchs, and their political enablers.
Economic stability and a sustainable society must have checks and balances. Given human nature, comprehensive and fair regulation is a sine qua non.
Any system can be grossly gamed without those checks and balances by the masters of greed and/or authoritarian demagogues. Before you blame the general system, you might check to see if the greed and power monsters have corrupted it for their criminal purposes.