I probably shouldn't have asked that question about the oil industry being the problem. I simply wondered.
There are rotten-to-the-core poor folks and there are rotten-to-the-core rich folks. Bad apples come in every color, are present in every industry, and in every socioeconomic group. Hey, we could all live in Aleppo. Now that's a true (ongoing) catastrophe, one that I personally cannot imagine.