While I don't know if this applies to AI usage, but actual gambling addicts most certainly do not shop around for the best possible rewards: they stick more or less to the place they got addicted at initially. Not to mention, there's plenty of people addicted to "casinos" that give 0 monetary rewards, such as Candy Crush or Farmville back in the day and Genshin Impact or other gacha games today.

So, if there's a way to get people addicted to AI conversations, that's an excellent way to make money even if you are way behind your competitors, as addicted buyers are much more loyal that other clients.