Khome, Letsie, Lord Mndz,
I think Khome was saying that market manipulation, rather than overproduction, was to blame for the current surplus.
However, Lord Mndz is right, in terms of the solution. Product diversification is incredibly important. It lets you deal with market manipulation, shortages, surpluses, and GM changes, without having to worry to much.
Personally, my country has a bit over 300 Corporations. But I don't let myself build more than 4 Corps maximum, of a single product, (except Air Transport, for the extra Airports), so that I am not exposed to a product dump, or other market issues. Most products I have only 1-3 Corps. This makes the country's economy very resilient.
Signed President of DanNation on LU