Why would the tobacco industry care?
That is simple it all comes down to money. The tobacco industry relied on nicotine to keep people addicted to their product. Now they realize that people want to either quit smoking, or find healthier alternatives. E-cigarettes provide this alternative. Unlike previous stop smoking aids, such as nicotine patches and gum, e-cigarettes have a better success rate of getting people away from tobacco. The other methods continued to feed the nicotine addiction, but did nothing to stop the very powerful ritualized habit of smoking.