I am a co-founder of Good Policies (www.goodpolicies.org), a CE-incubated charity identifying and then advocating in the most cost-effective policy windows in global health (currently focussed on tobacco taxation).
Apologies for not replying to this earlier but thank you for posing your question.
I had a few thoughts on the points that you made about why consumer surplus might not be a small factor.
Many smokers report enjoying the experience of smoking.
This may be true but I think these people are by far in the minority. Tobacco taxes do not target people who enjoy smoking but are of course applied to the whole population (assuming full compliance).
Many people choose to smoke despite knowing about the health effects.
I am not entirely sure what this claim is based on. I think that this may well not be true and may be less relevant to this project for a few reasons.
1. The health effects can be hard to understand, partly because of the tobacco industry pushing pseudo-science to prevent tobacco control laws from being passed.
2. Even if people do fully understand the effect of addiction means that people keep choosing to smoke even if they want to quit. My understanding is that the majority of smoker do want to quit.
3. In many LMICs, I think this is an unreasonable expectation particularly when the tobacco industry pedals misinformation around the harmful effects of smoking and that many countries don’t have warnings on packages (unlike in the UK/USA).
Newer forms of tobacco consumption, like vaping, have significantly lower health side-effects.
So far the evidence does seem to point that way. There is still considerable debate around whether nicotine delivery systems are helpful or not (particularly in countries which aren't equipped to regulate them) but generally, e-cig adoption is lesser in LMICs and tax structures can penalise more harmful products over lesser ones to encourage switching which would mitigate this risk.
Rational choice is still possible in the presence of addiction - see for example Becker and Murphy (1988).
I have not read through this paper fully but I have a few remarks for it’s applicability to tobacco control (please do let me know if you think I misunderstand the paper).
1. Tobacco taxes reduce the number of people who smoke partly by reducing the incentive for people to take up smoking. This paper seems to examine only the case where the person is already addicted and is choosing whether to go ‘cold turkey’ to quit not whether a person should become addicted. I think given the above points it is sensible to say that the higher expected value option in most cases is not to start smoking.
2. The paper states that "present-oriented individuals are potentially more addicted to harmful goods than future-oriented individuals" but does not seem to say that it is rational to give in to addiction, more that given people’s individual time preferences some people rationally become addicted to harmful products (e.g. people with a more myopic view who discount the future) and continue to use them. I don’t think this really makes a statement about whether this behaviour is good or bad in itself, more an explanation of how some but not necessarily all rational agents can exhibit addictive properties (under their definition of rationality).
It is probably also useful to mention the large number of people that experience problems due to second-hand smoke (where the consumer surplus argument probably would not apply).
I don't believe that the killing of Eric Garner is really attributable to increased tobacco taxes. Even if it were I am not sure that similar cases are common enough to outweigh the huge number of lives saved by this tax.
I have given some thought to the consumer surplus but have not formally modelled this mostly because I think it would take a long time and I trying to focus my attention on our pilot. If you were to build a quantitative model in guesstimate or similar I would love to take a look!