Still the government needs revenue during this pandemic if the casino company has a license then it will be opened by following a very strict protocol, I am sure this must be a lot of enthusiasts because now many people are bored, so if the casino is opened again, the client will automatically enter to play. as long as it follows government regulations, in each country the casinos are permitted and some are not depending on their respective regions.
So far only the pandemic has stopped the licensed gambling industry and has seen some of them save on profit. Fortunately, industry and government are willing to work together to restart these activities according to health protocols.
Gambling activity is indeed very difficult to stop even during a pandemic because many gambler are very addicted and find it difficult to stop this activity. So complying with government regulation as well as health protocol is very important if the desire to gamble is difficult to control. Even though we are never short of online gambling site, physical casinos still have an visitors.
After pandemic the economy will stimulate just how we all want to be back to normal again. Giving more license for casino to start operating will likely provide employment to the people but I don't think this is going to be the priority of the government. There would be more brothels popping out than casinos combined because many will try to survive and the oldest job of antiquity will still have demands.
Japan legalized this job afaik. Maybe its time keep people alive then let them starve to death.