To date in the 21st Century Capitalism is the uncontested winner and still champion of the economic systems on earth.
Where is capitalism there is also probability of the great depression and great recession which certainly in the past were significant and painful crises for many people especially at that time in 20th century when we had major crises. I could say we already went through crises in 21st century as well (financial & mortgage crises) In the end it was at some point healthy for economy long therm. People learned from mistakes causing these kind of crises, OR DID THEY? There always must be some kind of bumps and that’s why capitalism still exists. Of course it is not, in my opinion, reason to believe that capitalism is stable. Everything exists until it doesn't. US is definately not heading the right direction even though US is all about capitalism. Look at the debt, look at the money printing, bonds...you name it. The only question remains, is really capitalism the right direction? It might be the only direction as of now. It’s definitely better then countries with socialism.
It seems to me that it takes one generation for the market to forget the lessons. The lessons from the great depression carried us to the recession of the early 80s. That carried us to the housing bubble. Is that enough lesson for the current generation? Time will tell.