No. In Gulf War 1 for example there was approximately 250,000 explosive devices shot/dropped at/on Iraq and Kuwait from Aircraft or Cruise Missiles. And that was by no means a major conflict in the grand scheme of things. Are you suggesting replacing all those bombs with cruise missiles? What about the enormous stockpiles required for a Major v Major conflict? At ~1,000,000 a Missile that would be 250 billion, before a foot set on the desert. :D. Nope... Iron bombs + Aircraft will be the heavy lifters for the foreseeable future in Conventional elements of the Major-Major conflicts to come. And a major chunk of the Major-Minor conflicts, where it's still affordable to fire advance weapons to minimize risk and bad news for the CNN/Fox viewing masses.