Robot That Stocks Shelves in Japan

Convenience stores are looking to be even more convenient with the addition of some new help. In Tokyo, there is a robot called TX SCARA that restocks drinks in a convenience store and can tell which drinks are most popular. The robot is said to help with shelving while human workers worry about things in other parts of the store. TX SCARA can reportedly stock up to 1 thousand bottles and cans a day. Do we need robots like this in stores in the U.S.? Will this ever become a normal thing in American stores?