> You'll find drastically different results in other parts of the world (third-world, for instance). Plenty of people wouldn't talk to you if they see no financial benefit in doing it (even a measly amount can have a profound effect).

I live in Ecuador, so third-world. The people here are not really after money, unless it's very easy to get. I mean, 30% of the "economy" here involves standing in the road with a mango, hoping someone gives you some coin for it (literally). Those same people could go get a real job and do some real hard work if they wanted actual cash. They don't. They like doing basically nothing and getting along okay from it. Not saying you're wrong, but latin america doesn't work this way.