I would look to the Ukrainian KOROVAI and Brave1 marketplaces as amazing examples of how Ukraine shifted its procurement to allow for rapid prototyping, a changing battlefield and quick procurement. These are the sorts of things we need to move towards.
I want to make something clear. Everyone takes a hard stance that our procurement is ineffective, but the truth is that war changed so quickly with the introduction of UAVs. When this last happened, it was artillery, and it happened over 300 years. FPV drones were introduced 10 years ago, and we have to change procurement very quickly.
I would say that we can borrow lessons from Ukraine. I know that U.S. WARCOM, for example, is also moving its procurement models in a way that basically allows for more rapid iteration, prototyping and procurement of the systems we need on an as-needed basis.