I believe Brazil could benefit from the tax revenue, however going by the current government of Brazil and how they use the taxes they gather from the people, I severly doubt that they will put the gambling tax revenue to any good use. If anything it will land in the pockets of politicians and other corrupt people. As far as the legalization of gambling goes, it might be a good thing but I don't currently see how.
Corruption I believe is the core of every single government out there, be it democratic, communist or even a dictatorship, all of them have yet to make people believe in their plans which would honestly give 100% to these people. What I do think is, at least this would give them a chance to improve their state. The fundings might come in handy during the pandemic and that can help the COVID situation improve a bit.
It wouldnt hurt the economy but the government must be prepared to give treatments to the people who becomes gambling addict. This is not a new problem for we witness already to some gamblers which their lives become miserable after losing everything.
Online gambling I guess there are already people gaming there even before the legalization, soccer is very popular also in this country.
It's not just the government, most of the gambling companies as we see on the forum as well, they provide immediate help and at the same time there are several government strategies that might help them along the way. They can honestly use that 1% of that 30% to provide those people with free psychologists or something, being immediate attention to such concerns and monitor the erratic behavior, it's not hard they all just need a well balanced system at the end of the day.