[CommieBobDole]

Because AWS is designed to be like a pitcher plant, shaped like a funnel with inward-facing hairs to make it easy to get in, difficult to get out.

That's pretty much it - in my experience most of AWS' awesome features are designed to lock customers into an environment where Amazon increasingly provides all of the components and services you need to do business.

I would assume the endgame is to create an ecosystem where the vast majority of customers allow their IT function (infrastructure, developing software, engaging third-party SaaS vendors, etc) to atrophy entirely, after which they'll have no choice but to buy what Amazon is selling, at any price, in perpetuity.