Are there even casinos that are actually organizing Ramadan gambling events? I don't think there are. Why would they even offer such events when it's widely known that gambling is prohibited in Islam?
But it's a different story if Muslims are gambling. It's their fault, not the casinos'.
Gambling isn't a sin in Christianity. That's what I know. As far as Christmas is concerned, that has become a secular celebration. Many people who aren't Christians are celebrating Christmas seasons.
what Casino really see is Ramadan is HOLIDAY in some countries which is a g ood time for people to relax and do gambling.
Ramadan is very important event for Muslim people and we value that, we let them celebrate their day. But casino owners will never stop earning money for any religious or symbolic event.
I'm not a Muslim but my understanding of Ramadan is that it isn't a holiday. It isn't a time for people to relax and gamble and drink and be merry. It's a holy month. It's a time for fasting and spiritual introspection and renewal of one's faith and relationship with God. You don't celebrate when you're practicing Ramadan. On the contrary, you limit your movements and avoid your usual indulgences.
Celebration only comes at the end of Ramadan, during Eid al-Fitr. However, although it's a festive day it still doesn't mean you can gamble. Gambling remains prohibited.