We call this preserving the industrial base in the US. It requires some very hard decisions at the highest levels of government to do this. The US lost its ability to build strategic transports when the C-17 line closed last year. The assumption is that it can be resurrected at some future date, but it's not entirely clear that is possible. On the shipbuilding front, we're down to two shipyards that can produce nuclear submarines and aircraft carriers and there are lots of hard decisions being made to preserve them. The Russians lost their ability to build large Navy ships decades ago, and their little adventure in Crimea/Ukraine was at least partially aimed at regaining that capability. Sadly for them, that adventure also cut off access to Ukrainian marine gas turbines, and combined with the cut off of German marine diesels, their shipbuilding industry is in dire straits because they have no (modern) indigenous sources for these major ship components.