Capitalism hasn't failed, regulation has failed miserably. When banks have been able to leverage 60x of their capital, and something bad happens (subprime) the whole house of cards can collapse.

Capping dividend at 10% will hinder market mechanisms - what's the incentive for corporations to innovate and to go pass the 10%?

The solution is better regulation and obviously the role of the rating bureaus S&P,Moody's and Fitch must looked at.