Amazon's growth has overtaken many direct competitors in the e-commerce segment on its way to threatening disruption for traditional retail, and analyst Christopher Horvers thinks that he has pinned down the reasons for that meteoric rise. According to him, the massive Prime ecosystem and all of its benefits is a big draw. He also cites the limitless potential for expansion of Amazon's inventory and purview thanks to letting third-party sellers use the platform as a storefront. Amazon has also ventured far into territory that was previously either uncharted or never quite done at scale, such as its new cashier-free store venture. Finally, he says that Amazon has worked hard to make its platform and related tools as easy for customers to use as possible, leading to a massive user preference in the e-commerce world. Amazon has indeed had a very good past few years, even seeing founder and CEO Jeff Bezos reach the status of the world's richest person, with a staggering $105 billion personal net worth.