Hardware problems include limitations in display technology, and speed and loading of the World Wide Web network and local networks over time.
Software problems include the lack of an open, accepted standard for publication; and the limited lifespan of software.
Archival problems include the short-term nature of the electronic publishing industry and its associated companies and the limited lifespan of archival media.
I will conclude that electronic publishing may be useful for certain limited applications, but that, for the present, material which is needed over time should be archived on paper.