Pure speculation: the nation's infrastructure and institutions (think electricity, water, police) are now so broken that the investment that would be required i

Pure speculation: the nation's infrastructure and institutions (think electricity, water, police) are now so broken that the investment that would be required is large enough and risky enough that the risk-reward ratio doesn't make sense even if the oil itself is free or nearly so. Doesn't seem too improbable given the current low market price of oil and the disastrous conditions in Venezuela.