Where does a desirable product or experience end and addictive begin though? Pretty much all products or services sold are designed to be desirable. Some things are physically addictive (nicotine, opioids etc), so those are a bit more clear. But when we're talking about psychologically addictive, where do we draw the line between what's ok and what's not?

If my restaurant's food is so good people are "addicted" to it, that's a good thing. If it's about applying psychological patterns to trigger the addictive behavior that applies to a large swath of marketing.