In 15 years after a complete collapse and social reorganization it would be a boom if the US survives. Walk into any store and find a product not made in china. It takes years to re industrialize. US has no domestic manufacturing capability and you don't go from nothing to something overnight. The machines to make the machines to reindustrialize are made in china. Case in point the US after 2 years still cannot make rated paper masks for the mask insanity nor ventilators, media complains about running out of oxygen regularly to deal with covid patients. All those things would be prime candidates yet no progress has been made in scaling the existing or establishing manufacture of these products. On top of that a majority of people are skill less and lazy and you would have to rebuild out of an economic down turn that is going to make the great depression look like a booming economy. Your talking about something that you wouldn't even see any results from for at least 5 years and likely the patient will be dead in a much shorter time frame.