A powerful piece by James Bridle, I agree with most of it, though some grates a little:
Finally, the text still requires context. As publishers spin up their digital and print-on-demand backlists, more and more is published with less and less context. These efforts amount to land-grabs and rights-squatting, without adding value. Works without TOCs, indexes, author bios, footnotes. Placing work in context is one of publishers’ primary tasks, stretching out to commissioning introductions, assembling background material, supporting biographies and critical studies. Design belongs here too: good book design, appropriate book design, as important now as it has ever been.
Eoin Purcell's Blog 
so much is done these days without context. i go back and forth about whether epub is a good advancement because i think it does a disservice. work just doesn’t get vetted. it’s all about quantity. so i’ll try keeping my own nose clean. and support others who do, too. thanks for post.