Haha, yes... see how my LU countries have tanked with the oil market :P
But nevertheless you can get the concept from that, or you can look at my FB main.
LU is a bit of a grand experiment for me. I'm seeing what chunk of the entire market I can corner in a major commodity and what leverage that will gain me. But on to the point of this thread: the best way to set up a state corporation... or any corporation... is to manually contract the supplies in order to average the quality of low-cost supplies with the quality of high-cost ones at a favorable margin, thus significantly boosting the profitability of your corps.
This strategy brings most state corps to parity with CEO ones, and for quite a few it will let them outstrip CEO corps.
Of course, the flipside is you can also IPO said state corps over to your CEO and enact the strategy there. This allows you to crank up your CEO salaries to increase the resources paid to your country. The same way your state corps saving money increases profit for the country, the savings will allow your CEOs to run higher-then-normal salaries, thus earning you higher-than-normal resources paid. While I don't believe Tendo Ryu utilizes supply averaging on his GR main, you can see the concept of the high-salary CEO approach there.
On FB, I am in a transition of sorts, taking my contracted corps private. I'm presently hampered by a CEO over 750 corps which unfortunately creates some supply issues for me, and I don't feel like spending the coins to open a new one :P