Anyone with half an iota of awareness about Iran could have told us this. Major industry in Iran is run/owned by the government. There is no private oil industry in Iran. There is no private exporter in Iran. It is all State run. Private businesses in Iran are generally limited to smaller, individual run businesses or those that aren't deemed State-necessary (somewhere I've read that 60%-70% of the Iranian economy is state owned).
There simply isn't private businesses in the industries that would benefit from it.