The people producing heroine are mostly poor farmers, not rich startup guys. And magic weight loss pills are simply fraudsters, nobody defends those.

As for casinos and F2P games, what about them? Certainly some people get hooked, but 95% of casino players don't[1], yet they still enjoy it. What's wrong with that?

[1] http://www.pbs.org/wgbh/pages/frontline/shows/gamble/etc/fac...