From what I heard there are plenty of targets, but few that they are permitted to hit due to WH micromanaged ROIs.
From 30K feet, everything looks like a target. They're trying to avoid killing civilians unnecessarily because their relatives tend to take it personally (and join the jihad). Our ROE's are what they are because the American people will not countenance the torture of jihadists for information. Another way of putting this is that we don't yet view enemy civilians and combatants as vermin to be exterminated without any moral qualms. Yet. As long as the military force is composed mainly of volunteers rather than draftees, and casualties remain limited, these ROE's are probably what we're stuck with.