One of Iran's biggest problems is that Iran, for no good reason other than the benefit of some big corporations (kinda similar to the California situation) is one of the biggest produce and dry fruit exporter in the world, and that one thing the government would need to do is shut down that excess capacity. A thing very few countries would do because it would punish some oligarch for the benefit of the whole of society.

By oligarch I assume you mean the IRGC which controls most of Iran's economy.

In these kind of societies it's hard to think of the controlling powers as oligarchs as although they get rich off corruption, their power did not come from money but vice versa