Exactly, this was what I am about to say. Gambling site are draining people dry by the day, each time you gamble the chances of wining is 1/10. That is in every 10 tickets you play, you are likely to lose 9 and win 1 that is if you are even lucky. So Invariably the gambling site makes alot of money even without gambling fee. In other words exchange charges fee for transaction, but we don't lose entirely. Cryptocurrency market is a volatile market when we buy, we may make alot of profit on a regular basis expecially for those traders and those that buy Bitcoin and HODl. So if exchange charges fee there is nothing wrong because it's a nice business to invest compeard to gambling.
this happens to be the reason the casinos always advocates gambling responsibly and the fact that gambling isn't a means of making money of a job but a form of entertainment that should be done in that respect but sadly most gamblers see it like they are going to be able to gamble and make some good money off gambling because probably they are too smart to not loose so much to the casino only to end up loosing and turning around to start wanting to blame it more on other people or the casino that th ehouse edge is much or they aren't been lucky enough.