When serving as Amazon’s CEO, Jeff Bezos liked to advocate for managers within Amazon to make decisions that were easy to reverse. He would call these decisions “two-way doors.” This may be possible when launching a new feature, trying a new payment method, or launching a new product (such as Kindle, Fire, etc.), but it’s much harder when it comes to physical infrastructure. Buying real estate and building warehouses are decisions that cannot be easily undone.
I know that Amazon has been working on robots for their warehouses for a long time and already testing them in masses. I think that the suggestions that warehouse automation will not continue to increase is not accurate as Amazon needs to solve for it's current warehouses first, and then some. Wouldn’t be surprised if one day they will create a new business from selling these robots (same as AWS..)