That example is extremely unique and is more akin to selling a byproduct or runoff from some other production. AWS doesn't exist as an entirely new venture, it

That example is extremely unique and is more akin to selling a byproduct or runoff from some other production. AWS doesn't exist as an entirely new venture, it leverages everything Amazon has become good at over the years but never sold directly to the public. This isn't really the same situation at all. Amazon knows nothing about game development, and now has to hire a bunch of new people experienced in game development and focus on getting it right. AWS was already there and a clear benefit to the business before the idea of selling it to users as a service was even on the table.