I'd say the trend is the opposite. We're putting more pilots on board, not less.
I fly for Fedex. We are buying new 777 and 767 freighters, paying hundreds of millions of dollars for them. The 777's typically fly with four pilots onboard. The 767's will have provisions for three.
I've said this a thousand times on this board - I'll start worrying about my job when I start seeing unmanned freight trains.
The military guy has never had to worry about a bottom line, either. Who is going to pay for all the certification? For the infrastructure?
I just flew CDG-Dubai-Delhi, passing through the airspaces of the european countries, Turkey, Iraq, UAE, Iran, Afghanistan, Pakistan and India. ALL these countries would have to be on board and provide the infrastructure and support required. All to save the cost of a copilot?