I'm not sure I understand the conclusion you're trying to reach here. At first I thought your point was that lower prices are somehow bad for the consumer but you never expand on that point at all. The only coherent thesis I could get out of your comment was that consumers make decisions that are sometimes self destructive like the decision to smoke. But no one thinks cigarettes are good for them, I would still argue that people who desire cigarettes have a right to purchase them in the same way that I would defend people's right to purchase any number of digital services they might not actually need.