Comment by rixed
Cigarettes could sell at 3-4$ a pack only because some regulation are in place that enforce the total separation of manufacturing and selling those packs from paying the cost for the societal damages wrt. health, pollution, littering...
There are many possible ways to slice the economical cake.
I'm not sure what your point is here.
1) They don't sell for $3-4 a pack, yet your post seems to imply that the system has failed for cigarettes.
2) For externalities beyond the input cost of a product, the default [natural] condition is for those costs not to be included - one needn't enforce anything. Rather, it requires that someone with power put their thumb on the scale to enforce the inclusion of those costs during a sale[1].
[1] https://en.wikipedia.org/wiki/Pigouvian_tax