Here is a thought experiment. The market is closed for a week. No trades of any kind permitted. Nobody can even talk about trades by law for a week. Why should that stop the assembly line? They know their jobs. The orders are there, the delivery trucks are running, there is profit to be made.
You need gas to run your assembly line but you only have 1 day reserve. Because it's no trade week, you can't buy gas, production stops.
Ok, let's say that physical goods are excluded from the trading ban so adjust the situation a bit : you need to buy gas but you have no money. You have no money because you are currently building stuff for a big client and he'll pay you on delivery, so that's just a temporary situation. With a well functioning market you borrow money, pay for the gas, finish your job, get payed and pay back your debt. A trading ban would mean no borrowing money, no gas, and no production for the duration of the ban. And if some other industry depend on your production, they are screwed too.