"If any of my competitors were drowning, I'd stick a hose in their mouth and turn on the water. It is ridiculous to call this an industry. This is not. This is rat eat rat, dog eat dog. I'll kill 'em, and I'm going to kill 'em before they kill me. You're talking about the American way - of survival of the fittest." - Ray Kroc
The language is obviously graphic, but what he's describing is what every company would do. Why would they help a competitor? They have a responsibility to the shareholder to grow the business.
Well, entrepreneurs are humans, not robots, and humans have this instinct to help each other. At least here in Germany I hear from time to time about (SME) businesses helping their competitors.