[Jack of all Trades]

Thanks. This really isn't the forum for such questions anyway.

[Eric in the Ozarks]

Another reason new refineries are not being built is the threat that existing refineries bring to the marketplace as they grow larger, even if they're in another state.
When Pennsoil wanted to build a new plant in Arizona, Chevron made it clear that they believed this state was their property, via pipeline from California. In so many words, they promised to sell their Arizona bbls at just below Pennsoils' breakeven cost and this put a huge question mark in the economics of the project.