I realise I don't understand it as well as I thought I did. How about variable outputs of any commodity and countries taking any opportunity they can to increa

I realise I don't understand it as well as I thought I did. How about variable outputs of any commodity and countries taking any opportunity they can to increase consumption by replacing domestic production of a commodity with foreign production bought with the proceeds of extra production of another commodity for export. No country would benefit from producing so much that it put all foreign industry out of business; nobody exports anything except in exchange for something (imports).