This is a somewhat funny thing to say about a company whose "business" has gradually come to include: B2C e-commerce, B2B e-commerce platforms, web hosting (AWS), brick and mortar grocery store chains (Whole Foods and Fresh/Go), pharmaceuticals, healthcare (One Medical), Twitch, streaming video games (Luna), film and television production (in-house and through its acquisition of MGM), consumer electronics (Kindle, Alexa, Fire), home security (Ring), robotics, and satellites (Kuiper).
How many of these were "related" to Amazon's business, which, as we all know, is selling books through the mail?