It is the first of a new breed
I think the OP makes a lot of sense. This e-reader seems very innovative, but in a sense it is the first of a new generation of e-readers. Assuming others can duplicate the tech, other vendors will offer the improvements mentioned. Amazon may offer such improvements too, but if they don't others will. But you will likely pay more, perhaps a lot more, for the improvements.
Taking advantage of touch, varieties of swipes, improved navigation and settings adjustment, more robust collection management, darker yet crisp text adjustments, default overrides, bezel ergonomics, etc. If the e-reader market gets a lot bigger, Apple, Google, and Microsoft could offer good competition. I'm jumping into the e-reader market as a customer after decades of only reading DTBs. But there needs to be a real return for the big vendors to want to enter.
Let's hope the e-reader does not go the way of commercial airplane travel, where a cheap ticket is all that matters.