Consider in WW II, we capped all Army/Marine infantry units at 89 divisions. Hitler, outnumbered badly, invaded Russia with about 127; and at any given time the Russians could put 200 divisions in the field. So we have quite a history of putting a lot of resources into firepower in general and the navy in particular.
What we are building are very modern, very powerful vessels far ahead of the technology, efficiency, and fire power curve.
Within the next five to ten years we are going to see directed energy weapons used for close in defense and rail guns used for offense.