Well, if building a refinery was such a great idea, wouldn't some group of bankers or wall street guys do it? Maybe, just MAYBE, it really ISN'T a great investment to build a refinery... Especially when it looks like the government is about to change the rules on you again.
Do refiners make a ton of money? Sure. But compare their profits vs revenue to just about anyone else. The margins aren't that great. If oil companies could buy Starbucks franchises, that would be a better investment than building refineries.
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