Largely because there are few countries that are quite that oil dependent. Russia's a screw up but even they aren't as oil dominated as Venezuela, for instance.
I suppose there's Iraq...
>the government's extreme antagonism to non-oil businesses
This antagonism dates back to the 2001 coup in which the leaders of those non-oil businesses banded together in an attempt to unseat Chavez and replace the democratically elected government with tanks.
Generally this kind of behavior is strongly frowned upon, when it's done against a government that is friendly to the US. But, when it is done against a government that nationalized US oil interests, the propaganda wheel spins the other way: as you said, "it's not them that were hostile to him, it's him that is too hostile to them".
Anyways, can point fingers all you like in that conflict (and all sides do), but the fact remains that the conflict simply would not have happened without the spoils of the oil resources to fight over.
Corruption was similarly driven by the vast natural resources, just as happens in Africa, in the Middle East, in Russia... in every country in the world with vast economy-dominating natural resources except that sole unafflicted country - Norway.
It stretches credulity even further to believe that Venezuela's disastrous economic policies were the necessary and unavoidable consequence of a oil company strikes and short-lived military coup 16 years ago which was as unsuccessful as Castro's own attempts to overthrow an elected government with tanks a decade earlier. Especially not with periodic coup attempts and more regular mass strikes being an occupational hazard of being a Latam president regardless of oil wealth or lack thereof.
Norway ?
Nonetheless, it doesn't appear to be having a positive effect on your politics. Imagine if people like Gina Rinehart started to dominate.
Every country decrees how their economy should work. That's what central banks, laws, regulatory bodies and fiscal spending are all about.
Venezuela's economy is tanking because it was so heavily dependent upon oil revenue and because oil prices collapsed. That really is it. This isn't about socialism or capitalism or central planning or markets. This is all about oil, dutch disease caused by oil and political and economic instability caused by the fight over those resources.
The same thing happened in the 90s when Venezuela could hardly be called socialist and the resulting economic and political turmoil propelled Chavez in to power. Back then it was all "capitalism's fault".
Of the countries 'blessed' with massive natural resources - relative to the size of the economy, I can think of precisely one that hasn't been fucked up by it.
Edit: -2 points and 0 counter-arguments. Apparently the idea that Venezuela (along with African and Middle Eastern countries), with vast natural resources get screwed up politically and economically by them is not a popular one, but nobody really wants to say why they think that...