Unfortunately, it's like you said. If the authorities can't get people behind so many crypto exchanges that disappeared with people's money, they will probably never find these casino operators. Even if they do, each victim would have to file a report. If not enough people do it and the sum is small enough, they'll be given a fine and probably a suspended sentence.

You need to owe 10 million dollars in crypto or more for the authorities to get interested in you like they were in Mark Karpeles, SBF, or that Russian who hacked Bitfinex.