The real cause of Dutch disease is not economical, but political. Political forces formed from the exploration of oil (and other resources, like banana-producing land in central America) will not allow for the formation of a diversified industry where they will have less ability to control the host country. These political forces are a combination of both external (developed nations) and small minorities that benefit from the maintenance of the status quo.
Dutch disease was named after the Netherlands where the phenomenon was first observed - with North Sea oil. It was a highly valued currency, not politics, that rendered Dutch exports noncompetitive and shrank foreign investment.
