Air space isn't owned but I do have a privacy issue. Every one of the drones has a camera on it and flying over my land is an invasion of my privacy. I wouldn't take too kindly to it. I fall into the Okie group.
With that said, my boys have a drone and I love the thing. Unfortunately, it's only calm enough in Kansas to fly about 10minutes a month.
They are being used in the cattle industry to check fence and keep tabs on the herd. Send it out on a programmed route and watch from your cell phone or computer. Know if a watergap is out, tree fell on fence, head count, birthing issues, find dead loss, etc... All without driving through the gate. Very well could be used to see deer, scrapes, aerial view of trails, find a dead or wounded animal. Could be very useful.
I suspect they will be fought against for a while (for deer hunting/scouting purposes). But like compound bows, electronic calls, bait piles, trail cams, and now crossbows were all once "cheating", now are all widely accepted hunting practices.
Here is a short video of our place with my kids' Walmart cheapo toy. All I did was fly it straight up and spin it. If I had flown it around I could have gotten some really good video of our habitat.