From Wikipedia: In business and economics, predatory pricing is the practice of selling a product or service at a very low price, intending to drive competitors out of the market, or create barriers to entry for potential new competitors. If competitors or potential competitors cannot sustain equal or lower prices without losing money, they go out of business or choose not to enter the business. The predatory merchant then has fewer competitors or is even a de facto monopoly.
Haha - exactly. Except these are non businesses and they are doing it mindlessly. As I said, I'd have more respect for them if they knew what they were doing. But instead, at least from what I've seen, they deny it and claim their little "business" doesn't have an effect on the market. That would be true if it were just one person's little cake business, but it's a whole lot of little businesses that collectively have a big impact.