4 ms·But most of them failed because a jump in oil prices in 2006-2014. We're below these levels now.by zone411 8y agoBut most of them failed because a jump in oil prices in 2006-2014. We're below these levels now.Fomite 8y agoFor the moment. I don't know that I'd want to build a business - and certainly not an aircraft production line - on the assumption that oil will remain this cheap.zone411 8y agoWhat airlines often do if they are worried about this is to hedge through oil futures.