Final answer:
Big-box retailers are adapting to the competitive landscape by analyzing the success of Amazon's business model that leverages economies of scale and technology. While they may be evolving in different ways, it's key to focus on how they compete with online giants rather than focusing on store size or brick and mortar presence alone.
Step-by-step explanation:
In the context of mass retailing, it's critical to understand the competitive dynamics between big-box companies like Walmart, Best Buy, and Sears and smaller retail stores. When assessing their current strategies and market position, it is not accurate to say they are exclusively gaining a competitive advantage (although this may be true in some aspects), shifting to become larger, increasing the square footage of their locations, or noticing a decline in online purchases.
From the information provided, we can compare these retailers to the model that Amazon has utilized, which emphasizes the importance of economies of scale and the use of technology to achieve lower costs. The impact of Amazon's approach manifests in their pricing and the efficient use of their distribution network, with highly computerized warehouses located in low-rent areas globally. This method allows Amazon to offer competitive pricing and convenience for customers, which big-box retailers must adapt to in order to remain competitive.
Therefore, while the options suggest various strategic moves for big-box stores, it is most accurate to consider how these companies are adapting in response to online retail giants like Amazon that use economies of scale and technological advances to succeed. Walmart, for an example, has increased its online presence and invested in its own distribution network to compete more effectively with e-commerce platforms.