It's not a direct analogy (nor a particularly robust comparison) but I think of the pivots most countries made during WWII. A factory goes from making Ford auto

It's not a direct analogy (nor a particularly robust comparison) but I think of the pivots most countries made during WWII. A factory goes from making Ford automobiles to aircraft and back to automobiles within a span of four years. It'll depend completely on how much (or little) the government and facilitate and directly incentivize the needed changes on multiple levels.