Business School Can't Teach you Everything

So I'm driving down Moreland Avenue in Atlanta at 2pm on a Friday. It's 91 degrees with 40% humidity. There's a good amount of traffic headed to I-20, and I'm in a long line of cars waiting at the light. I notice this scraggly-lookin' dude walking inbetween cars with a plastic bag full of bottled water. He's selling them to drivers-by for $1.00 apiece. I know this because not only was I offered one (I didn't bite), but he's screaming his product and price at us SO LOUDLY that no one could help but hear him.

For the amount of time he's spending in the hot sun, on asphault, carrying a heavy bag, yelling, surrounded by exhaust from running vehicles, sweating his tuckus off ... seriously, is this a good business plan?? I mean, even if he's selling drugs that I can't see because I'm not a savvy drive-by drug buyer (though he's causing such a ruckus it's doubtful...he's drawing way too much attention), that STILL doesn't seem like a great way to spend one's summer afernoon.