It is really easy for anyone to prove that the DETERMINING FACTOR into their purchase was the KNC statement posted on frontpage on their website that the orders will be delivered until Oct 15th. If KNC knew they would be late, that would mean they intentionally used false information in order to increase sells, which could probably incur really high fines or other penalties, going to criminal charges against company execs and their business licence being revoked. If they can prove they were really expecting to complete deliveries by Oct 15th and did all due diligence to accomplish that, they'd still have to compensate customers and/or fully refund their orders.
KNC is in no position to play fool now and they better choose their words VERY carefully when communicating next time with their customers.