Extremely well said. Amazon remains one of the most bizarre companies in the world, and I mean this as a huge compliment. The only other company I can think of that's managed like Amazon is Berkshire Hathaway (and maybe Exxon). I am talking in the sense that they are built for the loooong run. Not five or ten years from now, but decades from now. Five years - an eternity for most companies - is a blip on the radar for these guys. It's fascinating to watch.
What do Amazon (consumer goods), Berkshire (investments, many in "boring" companies), and Exxon (energy) have in common? They're all massive businesses with no product cycle (and mostly no recognizable "product" at all). They are unlikely to be quickly undone because not only does their business planning go on for decades, their customers do too. This is not a sufficient condition for corporate longevity (see: Hostess, Lehman, Enron), but it might be a necessary one.