DeepMind managed to rekt the best players in Go and StarCraft after a few years of founding. Go has been played for 3000 years, and it has influenced military strategy since ancient times. The strategies you can find in Sun Tzu's Art of War were influenced by the game of Go.

Did you know what is the difference between the military simulators used by defense departments and strategy games like Go? Did you know both share a lot in common? What you dismiss as "game playing" has more present applications than you imagine and will make the difference between life and death in armed conflicts.

The orders given by generals will likely come from a successor of MuZero. And that may expand to every key decision making process, like the equipment to be manufactured, logistics, etc.

Combine that with the power asymmetry coming from drones and that "game playing" will become the most dominant force in this world.