The bank is holding my money so the bakery can't use it to pay for your bread. The bank will give the bakery the money when I get my bread.

Credit card companies have to provide refunds if an airline goes out of business. Holding back payment until the passenger actually flies eliminates that risk. The credit card hold back is the result of financial issues not really the cause. I agree it may be the "final nail" but it wasn't the cause.