> The long term goal is dynamic pricing for the perfect price discrimination (personal pricing). Detect when the customer is tired or stressed and show higher prices. Detect price conscious customers and show them lower prices. Maybe Alexa can trained detect the mood from the tone of voice and exploit that.

Now that's some baseless speculation if I've ever seen any. People aren't stupid. They start noticing that prices are cheaper at Walmart, they'll go back to shopping at Walmart.