In my previous job I handled the purchasing and logistics of the bulk purchases we made of components. It wasn't a lot compared to what you're talking about, I'm sure, usually just a handful of pallets at a time, far less than a container load. (We also did a ton of small package importing, but that came in via FedEx air.) Even before Covid, it was always a crap shoot. Management wanted me to wait until the last minute to order, but then got all sideways when there was a delay and we found ourselves in a bind over one of those critical items. I'm glad I got out before all this shit hit. Threading the needle was tough enough without the needle moving all over the place like it is today.