True. That Amazon chatbot is a whole different league in terms of intelligence than any of the out-of-the-box chatbots from intercom etc though.
https://cloud.google.com/dialogflow
^ But why would anyone go through all that for a vanity chatbox on a landing page? Stuff like that is for, you know, a real chatbot.
For me, it was mostly multiple choice questions that ended with, "your order has been refunded, you may keep or dispose of the item".
That jibes totally with my experience as well. Like you said "it works because it actually has the power/permissions to solve your problem." It's not necessarily more intelligent but it can do useful things nonetheless.