Many good comments on this thread. I'll agree that limiting compensation is the "right thing to do" short term. None of these jobs would exist except for the fact that the taxpayers bailed out "the system". I expect that real "pay for performance" in many cases would have people repaying past bonuses, not getting new bonuses.
But, it's not an important part of the long term solution. IMO, MichaelB is on the right track:
This is what happens when banking and investment businesses mix.
Risk taking businesses that invest for themselves and others should be allowed to keep the results as long as only their money is at risk and they can lose as well.
Banking businesses that intermediate should not be taking risks with other people’s money. If the bankers want the money they should find jobs in investment businesses and hedge funds.
The best and brightest never have and probably never will be bankers. They always have and probably always will be doctors, lawyers and scientists.
“The banks will lose their best people” is BS, pure and simple. If there is a market that screams for greater openness and more competition, it is the job market for highly compensated individuals in finance in the US. Not just banking folks either – start with CEOs that have created this mess.
We need to distinguish between investing with your own money and investing borrowed money. If you are investing your own money (or the pooled funds of a group, as in a mutual fund), you probably aren't creating external risks. But, if you are investing borrowed money, your failure can set off a chain reaction that does a lot of damage beyond your owners.
So we need regulation for any institution or group that borrows money to invest - this includes traditional deposit banking, some hedge funds, securitization, some types of insurance and probably a dozen more things. They all need some capital regulations, and probably some level of transparency. This type of regulation reduces short term profits, hence there is well-funded political opposition.
One thing that helps is splitting the businesses by function, as recommended by Paul Volcker. Another is keeping the borrow-to-lend institutions small enough that we can let them fail, as recommended by Alan Greenspan (after he discovered that markets aren't always perfect).
I'm afraid that things like this will get ignored and short term compensation limits will be a smokescreen to hide the fact that we're ignoring them.