"... When it gets down to it–we're talking trade balances here–once we've brain-drained all our technology into other countries, once things have evened out, they're making cars in Bolivia and microwaves in Tadzhikistan and selling them here–once our edge in natural resources has been made irrelevant by giant Hong Kong ships and dirigibles that can ship North Dakota all the way to New Zealand for a nickel–once the Invisible Hand has taken all those historical inequities and smeared them out into a broad global layer of what a Pakistani bricklayer would consider to be prosperity–y'know what? There's only four things we do better than anyone else:

music
movies
microcode (software)
high-speed pizza delivery