[zonkerdonker]

People knew smoking killed for decades. Do you think that with no policy change and no regulation, that Marlboro and Philip Morris would have let their market tank?

Advertising - banned, smoking indoors - banned, and most importantly, taxing the hell out of them (every 10% increase in cigarette prices results in a 4% decrease in adult consumption and a 7% decrease in youth consumption).

There isn't really directly comparable policy to taxing these free social media platforms., however, and the whole thing is a bit stickier. Before any policies can stick, the public needs to be aware of the issues. That is tough when most people's 'awareness of issues' comes directly from social media.