Do you think he expected the Dow dropping 800+? Cuz that's what many talking heads are accrediting trumps panic to. I think they're correct. He's done it before.
And the 10% credit card interest is dead. JP Morgan, of course, predicted economic collapse if it happened. Sadly, it probably would. Credit refused for 1/2 the population based on little chance in recouping losses from the many who are late paying or default slows things way down.