Of course, we can't shift the blame for the loss of money due to losing in gambling to other people. However, it is worth remembering that if in the country people has very small salaries and casinos are located in easy access, then this pushes they to try their luck and try to earn a lot of money on gambling to improve their lives..
As a rule, when people have a normal income, they go to the casino from time to time to tickle their nerves.
The sole responsibility of a gamblers lose were definitely should be blame on the gamblers itself. Knowing some casino built in a third world developing countries and as a human, people may get attract to try their luck if they get the informatiob that earning a high profit was possible in gambling they this opportunity will be considered. Government were allowing this kind of business to operate inside their country hoping that this can help to the betterment of the country and its people
A well-developed industry, modern agriculture, a developed service market and a large number of small businesses in all areas can improve people's lives, but not casinos.
The list doesn't count the countries with rampant illegal gambling activities. But really an irony here, gambling is illegal in China but if you will check the owners of big casinos, they are owned by Chinese, not in their homeland but in other countries. So wondering why the Chinese government just make it legal so they can get money out of it?
Of course, countries with a large number of illegal casinos cannot be included in the list specified by the OP. After all, illegal casinos do not pay taxes and do not provide declarations about the money earned. Therefore, there is no way to find out about the money they earned to include them in the comparison.