Those potential new owners would also probably just go trade on an exchange. If there is some big discount from a local party trying to get rid of the coins, wouldn't that raise some red flag?
The transactions for most cryptocurrency blockchains are viewable by all members of the public. With fiat, only the banks (or the governments) can see transactions. If I was to say there is some good thing, I would say that is a new innovation that hasn't been possible before. Cryptocurrency also does enable new illegal activities that weren't possible before, so there are definitely pros / cons, but I would say there are pros / cons to fiat as well.