The article investigates if the internet industry's monopoly structure creates market power and how it affects consumer welfare. Using new methods, the study analyzed internet platform companies in the e-commerce market. The findings show that these companies have economies of scale but do not possess market power, indicating high levels of competition in the industry. Interestingly, the presence of large enterprises may actually benefit consumers by increasing their welfare. This research sheds light on the competitive landscape of the internet industry and offers insights for regulation and strategies for traditional industries to address market challenges.