Following your statement OP, that wrong impression with gambling is what more people got addicted into it, that easy to earn patterns most of those who wanted a quick result experienced huge losses, thinking that by luck beside them they will quickly earn a huge amount of money, and because of that laziness they will not stop and will continue to this same process.
I guess more on excuses and not thinking in the right way, gambling is more on the risk side and only a small percentage will make some money out from the casino, more on those who will lose their money so have that time to assess yourself, don't count yourself as lazy trying to use this venue to make an easy profits, instead use it for a temporary entertainment.
One important thing I've always had in mind is that, ideal people should never be allowed to gamble, this was if we had and lived in a society that is sane, but unfortunately, we are not living in a sane society after all, so keeping track of who or those who have no job or verifiable means or source of livelihood outside gambling is almost impossible, if not totally impossible, but then, thinking deep about this, if this was possible to implement, that is where casinos block those who have no job or business of their own from gambling, this i believe will give gambling a better reputation, today in many societies, gambler are seen as tout and lazy people who do not want to work or be useful to their society.