Yes, you are right. If every business can follow the government rules, that can help the country's economy grow and they can have better development in the future. So if the casino which can make a lot of money from the gambling industry can pay the taxes which will be bigger than the other business, I am sure that can help the government. Every help from the business owner will be worth it for the government to run their countries and help other people in this pandemic.
What if the casino is virtual and how do you propose on taxing them if they are registered and located in a free heaven. It is impossible for them to tax them, all they can do is impose a complete ban of online gambling and encourage gambling houses to register with the government to get the approval to run the site,
if that is the only to get rid if the illegal gambling online i will support that movement . not only that we can combat tax evaders but we can also combat those scammers . they will think twice to scam if they are already registered under the government because the effortd that they make on making thier business legal will be wasted and they cant also hide because they already provided thier records right at the start . tax can be a big help now that countries are suffering from the effects of the covid19 .