He says things are going to move to conversational commerce? Alexa at best can re-order something that I've bought before. If I need a new product, the amount of information and comparison that I do (as well as checking reviews) doesn't lead well to a conversational model.
It's not like we walk into a B&M store and just talk to a salesperson. We examine the products, the packaging, the information presented about those products, we look around near by and see what else in a similar category is in the store.
Conversational commerce moves to an even lower bandwidth information transfer. With websites we can absorb way more info than we can with a chat bot. At best it will augment current experiences.
Maybe I'm wrong, and there are some products that are well suited to this model, but I'm failing to come up with any.