I'd disagree that "abusing people's addiction for financial gain" is equivalent to violence. It amounts to judging the psychological state of other people and making legal judgments based on that, which is something that should be approached with tremendous caution lest we find ourselves reenacting the horrors of the government-run insane asylums of the early 20th century and the policies of the Eugenics of Chesterton's day. (Chesterton's work "Eugenics and Other Evils" gives an excellent treatment of the subject).
Addiction: to devote or surrender (oneself) to something habitually or obsessively -- I'll add that once the addiction is created, any willpower is lost and very hard to regain.
Violence is using force, physical or manipulative emotional. Creating or encouraging that addiction is force and violence. Putting ingredients on purpose into food that trigger minor addiction is force. Manipulating emotion with advertising (especially to children/youth) is force. And to some degree restricting options of food choice can also be force.
