Nvidia has built an AI empire selling GPUs and related tools, generating triple-digit growth and record revenue, with its stock soaring about 800% over the past five years and climbing about 14% this year. Investors have worried about competition from chip companies like Advanced Micro Devices and tech giants like Amazon, whose AWS unit is the world's biggest cloud service provider and offers both Nvidia's top chips and its own in-house-developed chips spanning central processing units to AI chips. In the recent quarter, Nvidia's revenue surged 100% to more than $96 billion, with gross margin topping 70% quarter after quarter. During Amazon's earning call, chief Andy Jassy's 15 words may eliminate Nvidia's biggest risk, according to the article.