Others may have seen, Amazon Page Flip. Indeed, for some cases like reference and non-fiction, or just referring to other pages, I and perhaps others haven't found digital as convenient.
https://www.amazon.com/Kindle-eBooks...de=13632018011
I'm not sure what I think of their implementation. No doubt if such a thing gets added, it won't be for a while, but it's perhaps worth starting to think about if the design could be difficult.