I guess you have to look at it from every bodies point of view.
Government: will loose taxes, need to hang on to votes, all the anti smoking voters will think the government is good for controlling. We will live longer. More pension in some countries and care in old age.
Big Tobacco: are loosing money as we stop buying cigs, better climb on the bandwagon. Would like tax and other restrictions to keep us smoking, they are not sure they can get us addicted to e cigs ( that's the new users) watch out for some extra chemicals in the BT ecigs.
Big Pharma: will loose money from patches etc. also loose lots on drugs used to keep smokers alive ( for a little while).
Cancer cure researchers: well some will be out of a job and what they wanted was to find the cure and either be famous or sell to BP and be rich or both.
Anti smoking orgs: well they will be out of a job as well. I think you will find ther are a lot of them if you include all the cessation people connected to Heath depts.
I am sure some of you out there can add to that list...
In reality none of them want them banned because they are bad for us..... They are bad for them.