Commercial real estate agents and investors who evolve with the latest disruptive technologies should remain market leaders. : Polk Properties offers over 30 years of Real Estate experience that you can trust and depend on. We focus on long-range portfolio mgt. The retail industry has been experiencing disruption due to technological innovations that have pushed a growing number of consumers to mobile purchases and e-commerce transactions. In 2017, nationwide e-retail sales totaled over $409 billion. Amazon accounted for $54.47 billion and Walmart sold $14 billion in the U.S. alone.