Casinos are regulated where permitted, and often flat out banned. "Sin taxes" for junk food (particularly soda pop) are becoming increasingly common.

Vice industries often point to each other when trying to justify themselves, which I suppose demonstrates that there is safety in numbers. The strategy of tackling one problem at a time is countered by demands for all-or-nothing tactics, with "all" being obviously and conveniently impractical.

Funny aside, you know what else is considered a "Sin Industry" by the US tax code? Golf Courses.

In some climates, environmentally, that might be a reasonable classification.