Huh? Where are you located? Here in Australia we have all the major publishers in the iBookstore. Sadly not all of the publishers books are there though, like I couldn't find 'The Girl with the Dragon Tattoo' but other popular stuff like the Twilight novels are all in there.
Same as the iTunes movie store.
Same for a lot of Asian countries.
It's quite a miracle that Australia went from virtually ignored by Apple at the turn of the millennium to being on the same tier as the UK in terms of product releases and iTunes Stores.
What the analyst does not mention is the paucity of iBooks in most countries.
I use a US iTunes account and even in the US the iBookstore is still pretty lightweight though admittedly growing.
I think Steve Jobs had big plans for iBookstore but McGraw Hill spilling the beans on the iPad right before it was officially announced probably reduced Steve's enthusiasm somewhat: