Slighlty OT: Did run many chatsbots in various fields. Chatbots won't be the next big thing, not at all. Chats are a specific channel for more specific use cases, none of them created any killer app.
Maybe we need more time but chatbots got hyped for too long without any significant traction. Most are web shops/ agencies that build mediocre chatbots for brands nobody is using.
Not bashing chatbots just wondering why this topic gets upvoted again and again.