In Brazil, gambling was generating so much money that the government acted quickly to tax and collect taxes from gambling companies, but there is still a large gray area, and this is not an impediment to gambling and choosing your favorite gambling company
Government never skips to charge what doesn't generate money into the country, no matter the scale of the business, gambling alone generates so much money in a day and so the government had taking it into a tax system to generate revenue to the government. That's how it is in every country not only in Brazil.