It's enough to drain few thousands per sucker with scam this automated.
It will be pushed immediately to a temporary account and forwarded in non-repayable way to the scammer, leaving bank or credit card company to take the fall and a big headache to the user.
That doesn't happen. The whole idea is utterly ridiculous, if someone could cash out credit cards like that they'd just buy the cards for dollars a piece and not waste their time on a
complicated scam like this.
You are wrong because the nature of this setup specifically allows them to ensure no card owner will be able to find out that they've been conned for several months (by only accepting renters who want to move in in several months). If you just buy card info and charge them, some of those card owners will notice right away.