[snewman]

I'm not sure how impressed I am by Marc's arguments. For instance:

> Another classic Krugman rhetorical maneuver. According to Paul, keeping prices low is a sign of monopoly power, but of course he’d also say that keeping prices high would also be a sign of monopoly power.

This seems silly. Krugman doesn't say that Amazon's low prices are a sign that they have monopoly power. He's saying that Amazon uses low prices to acquire or maintain ("reinforce") monopoly power ("dominance").