Keep in mind that while the store brings in a majority of revenue, it provides less than 20% of operating income. A majority of operating income comes from AWS (which provides less than 20% of revenue).

https://www.fool.com/investing/2024/01/10/amazon-e-commerce-...

Forget about AWS and simply compare Amazon with other offline/online/mixed stores.

"In 2023, Amazon accounted for 37.6% of all e-commerce sales in America, which was light-years ahead of second-place Walmart at 6.3%."

Amazon is highly successful even without AWS.