I'm glad you should bring up the financial crisis. It's actually a great educational piece about how we don't have capitalism.
1. The crisis was caused by the government incentivizing market players (i.e. the banks) to drop their loaning standards below what they would have done by market forces. Subprime lending was not invented out of greed, but by government policy. The root of the financial crisis is in changes made throughout the 1990s to the Community Reinvestment Act.
2. The low interest rates exacerbated the problem, so the central bank added to this (central banks are inherently anti-capitalist institutions).
3. The market players reacted to this cocktail by packaging the subprime loans and mortgages into packages that made them seemingly easier to digest; and that was a very predictable reaction.
4. When it came crashing down (again, the government started this, namely the Clinton and Bush admins), the government did not react as it should have. Instead, it bailed out all the failing companies.
5. In real capitalism, there would have been no bailouts. All the big Wall Street banks, the big Detroit automakers, and lots of other companies would have gone bankrupt due to their failed business strategies. THAT is capitalism.
6. Had the laws of capitalism gotten their way back then, new players would have sprung up in the market that would have learned from the mistakes of the prior incumbents and after a very sharp recession, the economy would have recovered rapidly.
7. Instead of that, the government (and I blame both Democrats and Republican for this cowardly decision) decided that taking a sharp hit was not acceptable and instead wove an even larger bubble to defer the problem.
Capitalism is self-correcting and a truly free market does not know boom-bust cycles. Those cycles are created by failed Keynesian state economics and should have been banned to the history books many years ago. The only teaching an economically literate person can take from the financial crisis is that Ludwig van Mises was 100% right about everything he said and we should follow his theories to the letter.