Macau depends entirely on gaming to survive. Gamblers tend to smoke and there has been smoking in gaming areas from 1849 until now. So maybe it would not be prudent to rapidly ban all smoking whatsoever in casinos. Such a measure, in the worst scenario, could send many gamblers away and be roughly the equivalent to suddenly closing several casinos, causing a significant decrease in revenue and a strong impact on public finances. But this is exactly where Macau is heading now.A full ban on smoking may be difficult to justify and hard to defend legally.