Religious view on gambling is subjected to the type you worship, I have seen a Parisian company who majorly are Shite rum a casino, they have an announcement thread on this forum and they are even running a signature right now, so because something is prohibited from a particular religion doesn't make it exceptional for other religions because the last I checked, we hundreds of other religion apart from Muslim and Christians especially now that we also have the free thinkers who don't believe on the existence of God. Saying gambling is bad, if at all it is, no government will licence casino houses, only the extremists see the addicted players and then generalise it as a whole.
Each religion has their own rules and belief and that's why if some of the religions don't allow their members to gamble, some are saying that it is totally fine.
Based on the views and opinions of those that are in a particular religion, it will vary depending on what they really are convicted with their belief and commitment on that religion that they're part of.