Not that I was ever in the military but I doubt an infantryman or coffee pogue costs 2 million. Accountancy fuckery could make it so. If you say helicopters, APCs, etc, cost zero because it's included in the associated cost per man then yeah, but drones need transport too, so saying you can make a drone for $1000 vs $2 million for a human is apples and oranges.
They're nifty but it's just another tool. Besides, conventional engagements are the exception. We've spent nearly 20 years as a counterinsurgency occupier. The Korean War was the last time you could point to the enemy and say he's right over there. How much use would 500,000 non-information gathering, kamikaze attack drones have been to us in the ME? Some, yes, but it wouldn't have been a totally different conflict.
It's more useful to Turkey than to us. We already have overwhelming force. More force is nice, and it would save lives when fighting time comes, but nobody squares off against us on a battlefield as it is, even without drones. They sneak around. I don't see how an attack drone is the tool for the job. It might even be counterproductive in a Hearts & Minds campaign.
Being cheap and anonymously deployed, it's of way more benefit to our enemies. We'd do better to concentrate on counter-drone tech.