Hmmm? I don't think prices will drop much, if at all. I'm sure there will be a few who have to sell and consequently someone will get a great deal but I don't think it will be more common than right now.
I'm one of those guys who went and bought a gun shortly after Obama was elected. I hadn't held, let alone fired, my 22 rifle or 22 revolver, for many years. My anti-gun wife was nervous about Obama and TEOTWAWKI, we had a gun store as a client, therefore I bought a S&W model 60. My wife still hasn't fired it, but she has designated it to go to her son from her first marriage. Since that 357, I've purchased multiple handguns and a Marlin 336.
And now I'm considering an AR-15 and reloading equipment. I average a once a month range trip. Two of my boys go with me regularly. I've given a 22 revolver to my two boys from my first marriage. One shoots it regularly and now wants a lever rifle. The other has never fired his but he won't give it up. As he is moving to CO for the outdoor life, my bet is he will be asking for advice in a couple of years. The guys I know who bought a gun and haven't fired it don't regret the purchase at all. They are anxious to fire it, they just haven't taken the time. A co-worker's son wanted to shoot so I took him and his dad and let them fire mine. The young man now has a 10/22 and another range trip is being planned.
My point in this long diatribe is yeah, some guys buy a gun and haven't fired it but I suspect they all bought them really because they wanted a gun. It will just take them a while to fire it. I fired mine right away, fire it regularly, carry it, bought more, introduced others to shooting and look forward to reloading and some hunting. I'm not unique. It doesn't take too many like me to keep the sport growing. Overall, I don't think prices will go down.