There was an article in
The Sydney Morning Herald a few weeks ago about something like this in Australia...
https://www.mobileread.com/forums/showthread.php?t=59816
Personally, I don't mind the idea at all. Shopping online has it's advantages, especially when you know which book you are looking for. It's helpful having other reviews of the book on hand to look through, as well as other reader's opinions. Browsing online is not quite as much fun as browsing in a real boodstore, where you can pick up the book, admire the cover art, read the blurb on the back, thumb through it and read random passages here and there, and so on.
Browsing in a bookstore for an ebook, though... well, that could work too. Especially if you combine the best of both worlds, such as browsing physically for a book, finding the one you want, then ordering, paying and downloading the ebook version.
This shouldn't be an either/or situation... there should (in an ideal world) be both a physical presence, as well as an on-line one. This idea is just bluring the boundaries between them.
Paul
Canberra, Australia