While it is a large part of it it doesn't address the shortages and transportation issues with other products. Most of us cast and reload to avoid shortages. I cannot imagine the mindset of any board member that didn't have 10K of primers and adequate powder headed into this situation. I would think it about the same as starting out on a cross country drive with $25, a six pack of soda and a bag of peanuts.
We are also our own worst enemies. As soon as a product is available someone posts here so that there can be a run on it. In order for prices to return to normal, items must sit on the shelves, not fly off them.
With the current EPA and business restrictions the start up for a primer and or powder manufacturer would be horrendous. I could see the permitting process taking years. The only exception would be if it were "Woman Owned", the latest branding gizmo. There's my two centavos.