I think an issue is the leap involved. Vinyl required record players to be used- thus the leap to CDs is replacing mechanical players with more sophisticated mechanical ones. Books, however, require no analogous external player. eBooks, on the other hand, require readers, which are digital and subject to mechanical failures. eBook readers also have other external requirements such as a need to be charged, Wi-Fi access to download books, and so on. A paper book is self-contained.