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Amazon's unmatched reach in daily life
From vitamins and repair tape to mango chutney, a typical household's monthly purchases often trace back to Amazon. The company's footprint extends beyond its core online marketplace to Whole Foods supermarkets, Kindle e-readers, Prime Video streaming, and the cloud-computing backbone of countless websites via Amazon Web Services (AWS). Earlier this year, Amazon surpassed Walmart to become the world's largest company by annual sales, a milestone achieved 31 years after Jeff Bezos launched it as an online bookstore from a rented garage.
Competitors exist-but none match Amazon's scale
While Amazon faces rivals in every sector it operates, none come close to its dominance in e-commerce. In the U.S., Walmart and Target have expanded their online retail arms and launched Prime-like subscription services. The UK's Tesco leads in online groceries, while Germany's Zalando dominates fashion. For budget-conscious shoppers, Chinese platforms Temu and Shein have gained traction. eBay, which recently received a $55.5 billion takeover bid from GameStop before rejecting it, focuses on auctions and second-hand goods, a different model from Amazon's.
Yet Amazon's market share dwarfs all competitors. In the U.S., it captures 40.5% of online retail sales, compared to Walmart's 9.2% and eBay's 3%. In the UK, its share stands at 30%.
"Amazon is not an undisputed monopolist in e-commerce, but it is the dominant firm. The scope of what it sells is unparalleled."
Annabelle Gawer, Director of the Centre of Digital Economy at the University of Surrey
How Amazon built its dominance
A mix of strategic advantages has cemented Amazon's lead. As an early mover in online retail, it capitalized on the internet's potential to revolutionize shopping with speed and convenience. Shareholders tolerated years of losses as the company reinvested profits aggressively, a strategy traditional retailers couldn't replicate without facing backlash.
Today, Amazon's high-margin businesses, particularly AWS, subsidize its lower-margin retail operations and fund new ventures. Its tech-driven approach-leveraging algorithms, automation, and data-has optimized efficiency and customer experience. A culture of experimentation has led to expansions into cloud computing, consumer devices, private-label products, and even healthcare.
Two pivotal moves further solidified its position. In 2000, Amazon transformed from a retailer into a platform, inviting third-party sellers to list products on its site. This created a "network effect": more sellers attracted more customers, which in turn drew more sellers, making it nearly impossible for newcomers to compete. The 2005 launch of Amazon Prime, offering free and fast delivery for an annual fee, made the platform "sticky." Over time, Prime evolved into a bundle of services, including streaming, Whole Foods discounts, and exclusive content, making membership harder to cancel.
"Amazon is not just a website that sells products. It's an ecosystem of multiple businesses that reinforce each other, which makes it very hard to compete with."
Annabelle Gawer
Allegations of anti-competitive behavior
Critics argue Amazon's dominance may also stem from practices that violate competition laws. In the U.S., the Federal Trade Commission (FTC) and California's state government have filed separate antitrust lawsuits against Amazon, set for trial in early 2027. California recently released evidence alleging Amazon stifles competition by preventing sellers from offering lower prices on rival platforms. The company is accused of penalizing sellers-by burying their products in search results or removing their "Buy Box"-if they list items cheaper elsewhere. This, critics say, removes incentives for shoppers to leave Amazon and undermines rivals' attempts to attract sellers with lower fees.
Amazon denies the allegations and is contesting the lawsuits.
Could Amazon be broken up?
Some advocates, like Stacy Mitchell of the Institute for Local Self-Reliance, argue that splitting Amazon into separate companies would "oxygenate the market." However, experts note that breakups are rare-Google recently avoided one in its own antitrust case-and unlikely in Amazon's case.
With deep pockets and time, a rival could theoretically replicate Amazon's e-commerce platform. Walmart, for example, has adopted elements of Amazon's playbook. Yet Amazon's next challenge may not come from a traditional retailer at all. The rise of generative AI, which embeds shopping directly into interfaces like ChatGPT, could disrupt Amazon's dominance by allowing users to buy products without visiting its site.
"You aren't necessarily seeing a company that is impossible to compete against."
David Yoffie, Professor Emeritus at Harvard Business School
What's next for Amazon's rivals?
While Amazon's ecosystem remains formidable, emerging technologies and regulatory pressure could reshape the landscape. For now, its combination of scale, innovation, and strategic reinvestment keeps it ahead of the pack.
