[Potironette]

What is "Wall Street"? I'm researching something for a school paper and came across this phrase:

"The industry’s dilemma is that the average American can only eat so much of that food – about 1500 pounds a year – and the total number of eaters in this country is growing by only one or two percentage points a year. Yet Wall Street demands that food corporations grow at a considerably faster rate."

Does that mean Wall Street literally or Wall Street as a metaphor for some sort of market system thing? Or maybe Wall Street is actually the system. I thought Wall Street was a place?