Industrial capacity can equip an Army sure, but it cannot train it or confer experience. The experience of both world wars teaches us that. At the close of both world wars the victorious democracies demilitarised a damned sight faster than they ramping it up.Yes, that worked just fine when we had a Territorial Army of many regiments, not just battalions, the average infantryman's kit-out was not much more than boots, uniform, helmet, rifle and water bottle, and a large industrial base that could churn out tanks and artillery that were basically clockwork.
Not only is that kit-out for even the most 'basic' infantry man/woman far more comprehensive but the TA no longer exists and the Army Reserve is regularly used to infill full-time units. We are spread way too thin, and that's before you look at industrial capacity.