it doesn't mean people making "millions of dollars per year." It means people making either at least $250,000 a year or $200,000 a year. Or if you listen to Biden it's $150,000 a year.
But I think you missed what I was saying. It seems to me that when politicians talk about raising taxes on the rich that they are appealing to a charicature that resides deep in the national psyche; that "the rich" are indolent spendthrifts who either inherited their wealth or somehow stole or cheated to obtain riches. But "The Rich" is not a group composed primarily of what used to be known as "coupon clippers". Read the book "The Millionaire Next Door"; most of the "rich" are people who started a small business, are thrifty, and don't live the high life. But these are the people who will bear the brunt of increased taxes.
Not sure what you mean by our GDP being very heavy on financial instruments. The financial industry constitutes a smaller portion of the total U.S. economy than manufacturing does:
http://upload.wikimedia.org/wikipedia/en/3/33/Sectors_of_U S_economy_-_firms_with_payrolls_-_sales_vs_employees_in_200 2.gifI don't have any data to confirm or deny your last sentence. From what I have read, though, the primary aspect of the last days of great empires is increased centralization of government power coupled with redistribution of wealth (bread and circuses) to placate the populace.