It is spreading as a cancer. This month the central bank published a report saying that in August 20% of the Bolsa Família, the largest money transfer program for very poor Brazilians, was spent on these bets.
Out of the 20 million people that receive it, 5 million made bets during that month. This is 2 billion reais (about $450M) spent in a single month by the poorest Brazilians.
It's a cancer. Everywhere you go there are ads. The influencers, the biggest athletes and musicians are marketing it.
Although I tend to be liberal, this needs to be heavily regulated.
The comparison needs to be in terms of typical use, otherwise engineering for addictiveness gets a free pass because it often hinges on frequent small rewards and can have a near unity return on a single shot basis yet be a big money maker for the house.
Of course there are probably 'safer' forms of gambling that some addicts are presumably able to use to maintain their addiction at a level which isn't disruptive to their life. ... but single shot EV isn't the right metric. Some weekly state lottery usually has pretty poor EV, yet is seldom ruining anyone.