Limited industrial and supply capacity made a completely new aircraft specification a substantial production risk for Japan. The United States and its allies had more resources to absorb the disruption of introducing new types during the war. By the time Japanese designs were mature enough to justify switching production, the coastal shipping on which industry depended was being lost. Better internal transport, including railway links, is therefore part of the proposed industrial reform.
Notable Point · 3:08:43-3:10:07
Why new Japanese aircraft designs depended on transport and industry
New aircraft required enough industrial capacity to risk a production change and reliable transport to keep factories supplied.