I read the wikipedia link, it seemed inconclusive. Fossil fuel subsides are less than that of renewables (unless I am reading the article wrong) and that's a 1-1 comparison, fossil fuel must utterly dwarf renewable in terms of revenue.
I'm not saying that big (or small) oil is innocent by any means, personally I believe the problem lies with the political side of it, but certainly I don't think the basics of oil extraction and delivery deserve the rep they currently have.
And on farming, how much carbon do you think farmers released into the atmosphere burning the trees and scrubs that stood in the way of the farmland? Not to mention the damage done to the hydrosphere?
You might like this by the way, if you haven't already read it: http://harpers.org/archive/2004/02/0079915