With any luck the loss of income will incense the indigenous population and they will express their displeasure to every jihadist they happen to come into contact with. Probably won't happen though. "Their" propaganda machine has probably, sorry I'm not searching for it this is based on previous incidents, already put a good spin on it while "ours" hasn't, in all likelyhood even recognized the potential.
This is about the only thing that could have saved the rally's prominence, so I'm certainly looking at it as good news. There are already several rallys run in the same area, so the liklihood of cancellation is much less. That might entice some manufacturer's to participate who otherwise may have taken the "fool me once..." position. Not much help for the privateers here, but there's really no way to make that up. Should make the event a bit cheaper for North Americans too, relative to Europeans.