Yup, you got it. There is still more to it though. That classic story happens in a vacuum. Real world policies don't. To continue with the fish example, liberal policies would give a fish for a day, that guy would say "hey this is cool, I'm full now, what do I do?" So he has a kid. Well, he still doesn't know how to fish and neither does his kid, so now they get two fish. And so on, Etc. Meanwhile the proportion of fisherman to fish eaters becomes lower and lower over time. Eventually the people who know how to fish die off with few or no offspring because they were so busy fishing, and now there are a whole lot of hungry people.
These people know they like fish but are not sure how to catch them, so they wade into the water flailing about unsuccessfully. The sharks and piranhha can sense the distress in the water and begin to feed on humans. Humans fall way down on the food chain and sharks and piranhha become apex predators, learning such skills as playing dead in the water to attract stupid humans who are hungry.
Do you want to be evolutionarily passed by sharks and piranhhas? If not then don't re-elect Obama