I think addiction is a redherring.

Pokemon is addictive, computer games are addictive. Its whether they are knowingly causing harm, and or avoiding attempts to stop that harm.

Addictive patterns in games and other online activity is a bit less innocent than you are portraying it: knowingly causing harm is too low a standard. A lot of the profitability of online games, prediction markets, etc. comes from the whales. The whales are probably addicted. If your business is a whale hunt you are possibly causing harm at least to the extent that addiction is dangerous.