The primary source of scale diseconomies appears to be:

Question

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The organizational difficulties of managing an ever-larger enterprise are the primary source of scale diseconomies. As a firm grows, it becomes increasingly difficult to manage all of its departments and operations, leading to communication breakdowns, inefficiencies, and increased coordination costs. This can result in higher costs and lower productivity, offsetting the benefits of economies of scale.

The Primary Source of Scale Diseconomies Appears to Be