Answer:
Military spending is one area where there is no private solution. No single corporation or group of citizens is motivated and trustworthy enough to take financial responsibility for maintaining a nation's military.
- Every dollar spent on defense is a dollar not spent on other public services.
- On the other hand, dollars spent on the military wind up in the private sector as payment for goods and services the military requires.
- Military spending may skew civilian technology development, but talent and applications flow both ways.