Despite the gap in online segment of retail, Walmart will be a dominant force, as detailed in the article. In offering 2 day shipping at half the cost of Amazon, Walmart should be able to make some inroads.
A big focus should also be in improving the store experience, while promoting its online channel. The store experience in high populated areas can be horrible. Despite the high demand, public policy does negatively impact the retailer from balancing it, but operations of those stores can be altered as well.
As stated in the article, Walmart is a giant among growing competitors. It can use its resources to ensure its continued leadership of the retail industry.