Given the existing socioeconomic patterns of smoking [0], I think this is the most likely scenario. Given a Venn diagram of people who smoke (low socioeconomic status) and people who "Juul" (high socioeconomic status [1]), the overlap in users is likely quite small.
It doesn't seem like they're cannibalizing an existing market, as much as they are forging a new one.
It doesn't seem like they're cannibalizing an existing market, as much as they are forging a new one.
[0]: https://www.ncbi.nlm.nih.gov/pubmed/22092035 [1]: https://www.newyorker.com/magazine/2018/05/14/the-promise-of...