But economists say -- and data is beginning to show -- that a significant change may in fact be under way. The rich, as a group, are no longer getting richer. Over the last two years, they have become poorer. And many may not return to their old levels of wealth and income anytime soon.
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Just how much poorer the rich will become remains unclear. It will be determined by, among other things, whether the stock market continues its recent rally and what new laws Congress passes in the wake of the financial crisis. At the very least, though, the rich seem unlikely to return to the trajectory they were on.
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"We had a period of roughly 50 years, from 1929 to 1979, when the income distribution tended to flatten," said Neal Soss, the chief economist at Credit Suisse. "Since the early '80s, incomes have tended to get less equal. And I think we've entered a phase now where society will move to a more equal distribution."

Few economists expect the country to return to the relatively flat income distribution of the 1950s and 1960s. Indeed, they say that inequality is likely to remain significantly greater than it was for most of the 20th century. The Obama administration has not proposed completely rewriting the rules for Wall Street or raising the top income-tax rate to anywhere near 70 percent, its level as recently as 1980. Market forces that have increased inequality, like globalization, are also not going away.

Ahem! Political submission to (or promotion of) unregulated, untamed market forces has increased inequality...

I think incredibly high incomes can have a pernicious effect on the polity and the economy," said Lawrence Katz, a Harvard economist. Much of the growth of high-end incomes stemmed from market forces, like technological innovation, Mr. Katz said. But a significant amount also stemmed from the wealthy's newfound ability to win favorable government contracts, low tax rates and weak financial regulation, he added.
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Beyond the stock market, government policy may have the biggest effect on top incomes. Mr. Katz, the Harvard economist, argues that without policy changes, top incomes may indeed approach their old highs in the coming years. Historically, government policy, like the New Deal, has hadmore lasting effects on the rich than financial busts, he said.

One looming policy issue today is what steps Congress and the administration will take to re-regulate financial markets. A second issue is taxes.