I think owning a casino can be awesome considered profits made. I am pretty sure most of casinos (especially physical ones) are like money printing machines. Although I am also there are so many regulations that make it very hard to operate a casino. Online Crypto casinos even, sometimes they limit you. (I once forgot about my VPN and used Dutch IP to enter stake com but I got warning). Regulations, taxes etc. are hard to deal with.
I personally think that with money, regulations shouldn't be an issue, even the Holy Book(Bible) made us to understand that money answereth all things.
Talking about regulations on a more serious note though, I believe it largely depend on the country one live and is operating the casino from, like in my country here in Nigeria, A casino business, whether a land based casino or online casino, is a very lucrative business as the government currently do not give much attention to casino regulation in the country.
So if somebody like me now decides to start a casino business here in my country, there is a big chance that I will make it big in a short period of time, most especially, if i have the money to pay for heavy marketing and promotions, both online and offline, and also have the influence and affluence to win me partnerships with good and reputable companies as well as big names in the entertainment industry.