As author of the post, I couldn't agree more with the commenters on the need for open standards. The idea is to give people a feel for the devices, not force them to come to the museum to read the books. But, yes, the content issue does enter into it. What if some future DRM is super-hard to crack? Then, if nothing else, screen scans could be made. I would hope it wouldn't come to that. Down with DRM! But just in case. What's more, the museum would let people in the future be able to experience the look and feel of today's e-books. Today's taken-for-granted gadgets will be yesterday's historical finds.
Regarding financing, the museum could happen at LoC or the Smithsonian through donations.