Vap, it really is insightful to read what David has said about the history of this issue and he may be the only person alive that has seen the three industries from the inside. Unfortunately, as Thad pointed out, harm reduction does not generate any serious cash flow.
You may want to take a look at this link-
Tobacco Vapor Electronic Cigarette Association
Notice the membership. This organization, run by Ray Story of infamous Smoking Everywhere, has limited membership with a fairly narrow view of the E cig world. That view isn't particularly attractive to the world that exists here. David took a job with TVECA because he felt he could make a difference (and as you said, make some coin). However, he saw fairly quickly that, as in every industry, the road to the money paved the message.
His view on how to solve the "smoking problem" is quite simple and pure, reduce the number of kids that ever start. He doesn't like the denormalization efforts being devised against current smokers- no housing, no jobs and no place to legally smoke are all, apparently, long term goals. They might not be able to make smoking illegal but they sure can make life miserable if you want to continue to do so.
The only criticism I'd have is that he didn't put himself in a financial position that he could take his show on the road as a member of the fine group that are addressing tobacco harm reduction. He could be a major hammer and I think he'd be a smart marketer of the philosophy.