It's not about the value of mice/keyboards vs controllers in gaming but about designing the best interfaces for the use-case. I doubt when the Navy designs their systems that they're trying to mimic professional gamers who needs 99.9% aiming accuracy and extremely fast response times in a simulated environment. Typically you design it for the average person, with the least amount of complexity.
Call of duty and rainbow six and countless other FPS games sell big on console. Google says games sales are 35% PC.
Which again has nothing to do what I said. Stop turning this into a petty flames war.
If by console player numbers vs PC player numbers, we are talking about the number of people who have ever played an FPS shooter on either platform, console is almost certainly smaller, purely due to the ubiquity of the PC.
Most regular game players of either preference have played on both at one point or another. But the sheer quantity of people alive who have played the shareware first levels of FPS shooters on PCs at one point or another, and who if they have ever used a console, will have played pastel coloured puzzle games, or used health gadgets with plastic exercise equipment straight out of Brave New World, tips the scale massively.
That being said, I would not be particularly surprised if the number of people currently playing an FPS shooter on either platform, as of this instant, was greater for console.
Drones are being piloted with Joysticks as are underwater submarines and other technology. Use-cases where high percussion mouse movements and the millisecond differences between mechanical keyboards and a gamepad button are of no value as they are mechanically limited machines - not simulations.