Yes, that’s true. I firmly believe that the photo book is still an underestimated asset in the cultural history of photography. Speaking as a photographer it is the one vehicle for photography that has influenced, not just me, but many photographers in a very big way.
Finally in this last decade, there has been a strong revival of interest in the photobook. I worked with Gerry Badger on Volume 3 of the History of the Photobook, published by Phaidon in 2014.
In 2017 I gifted/sold my book collection to the Tate Gallery.