The long game is probably a litany of other vision-based tasks including things like stock management. Not knowing what is even on their shelves is a huge issue for retail— having oversupply is wasteful and can result in spoilage, and undersupply means lost business and unhappy customers.

Note that there are other companies getting into this space:

http://pal-robotics.com/en/products/stockbot/

https://shelfierobot.com/