...is that legalised gambling of that sort does tend towards being a stupidity (and/or negative class indicator) tax (albeit a progressive one, since the smarter/higher SEI you are, the less likely you are to pay it), which can have some negative effects on the people who wind up not willing or able to avoid it (and people connected to them) -- but that's hardly a "gambling is bad" argument.
On the other hand, sales taxes are inherently regressive, so I rather support your argument. I think the social costs of dealing with the few people who may have trouble with that form of legalised gambling vastly outweigh the collective demerits of sales taxes.
I may be able to dredge up some supplementary material from this area (most recently debated here that I know of), from both sides, if you'd like.
The only real disadvantage...
On the other hand, sales taxes are inherently regressive, so I rather support your argument. I think the social costs of dealing with the few people who may have trouble with that form of legalised gambling vastly outweigh the collective demerits of sales taxes.
I may be able to dredge up some supplementary material from this area (most recently debated here that I know of), from both sides, if you'd like.