Ah yes, trickle down economics. They would work well... if people didn't make more money than they know how to spend it! Investing one's money takes it out of the loop and puts it in the "happy go-lucky money machine" that is the stock market, and it rarely, if ever , does anything direct for the economy.
China, India, Brazil... These are some of the strongest emerging economies in the world. Their industries and their economic policies are diverse and barely similar. What do these economies have in common? An emerging middle class.
Japan exploded in the 80's. This was followed by... and a growing and emerging middle class.
America had an industry boom in the 50's. This was highlighted by... and emerging middle class!
See where I'm going? UPward mobility is key to a strong economy. Common sense would dictate, regardless of your prefered economic model, ensuring the survival and continued growth of a "hungry for material goods/keeping up with the jones'/starting out a new business" middle class would be paramount. One should be concerned with "the poor," because they aren't moving up.
On a side note, in the time it took me to write this, use the bathroom, edit, and post? Mitt Romney made $1,525.18.
Me? I made jack squat, because I don't have a Happy Go-Lucky Money Machine.