> Governments that provide comprehensive healthcare funding have an incentive to want people to stop smoking.

The incentive is to keep people smoking. Counter-intuitive as it sounds, smokers spend less on healthcare.[1]

[1] http://economix.blogs.nytimes.com/2010/06/07/greg-mankiw-on-...

Edit: This is consistent with real-world observation. Anti-smoking policy is the greatest in the US where the plutocracy benefits from increased healthcare spending, and relatively lower in social welfare states in Europe.