You are correct, I was looking at bulk ammunition sites for 5.56/.223 one site a large amount but pricy, while I was looking at other sites and found nothing I went back to the site that had some and it was gone, 20 minutes tops.I think everyone is producing as much as possible...but it doesn't meet demand. Nor does it match normal output rates because of supply-chain shortages. EVERY industry is shorthanded right now due to "distancing" requirements. Less ore means less steel, lead, and brass. Less steel, lead, and brass available to the manufacturers means fewer slides, frames, bullets and casings being produced. Combine all that, with massively increased demand...and you buy what you can get your hands on.
It's like American Pickers - "the time to buy something...is when you see it".