Discussions about risk and trust feature in many of the courses that I teach. I like this scene where Daniel Day Lewis highlights the risks the townsfolk will face if they get someone else to drill for oil on their land.

Out of all men that beg for a chance to drill your lots, maybe one in twenty will be oilmen; the rest will be speculators - that’s men trying to get between you and the oilmen - to get some of the money that ought by rights come to you. Even if you find one that has money and means to drill, he’ll maybe know nothing about drilling and he’ll have to hire the job out on contract, and then you’re depending on a contractor who’ll rush the job through so he can get another contract just as quick as he can. This is... the way that this works.
— http://www.imdb.com/title/tt0469494/quotes

He then explains why he is so much more trustworthy:

I do my own drilling, and the men that work for me work for me. and they’re men I know. I make it my business to be there and to see their work. I don’t lose my tools in the hole and spend months fishing for them; I don’t botch the cementing off and let water in the hole and ruin the whole lease. I’m a family man. I run a family business. This is my son and my partner, H.W. Plainview.
— http://www.imdb.com/title/tt0469494/quotes