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However, the risks of "buying late" are legitimate. Amazon faces unprecedented antitrust scrutiny from regulators globally, which could lead to restricted business practices or forced divestitures. Additionally, as a trillion-dollar company, achieving the double-digit percentage gains seen in previous decades requires massive incremental revenue. The law of large numbers dictates that growth inevitably slows as a company saturates its primary markets.

The question of whether it is too late to buy Amazon stock involves a complex evaluation of market maturity versus sustained innovation. While Amazon is no longer the explosive startup of the late 1990s, its current position as a global infrastructure giant suggests that its growth story has transitioned rather than ended. Investors must weigh the company’s massive scale and regulatory hurdles against its dominant lead in cloud computing and its burgeoning advertising business.

Furthermore, Amazon’s retail dominance has evolved into a sophisticated logistics and advertising engine. By owning the "last mile" of delivery, the company has created an ecosystem that is nearly impossible for competitors to replicate. This physical footprint is now being monetized through a high-growth advertising segment, where Amazon leverages its vast trove of consumer data to offer brands direct access to shoppers at the point of purchase. This shift from simple e-commerce to a multi-faceted service platform suggests that Amazon can still extract significant value from its existing user base.