Plato's question is now, who will watch the server farm managers?

Sticking to dead-tree formats doesn't mean someone isn't reading over your shoulder:

The extent of libraries’ reliance on third-party services raises the question of survival. A library that is no longer in control of how its data is managed creates a false sense of safety for its patrons. A library that cannot preserve the integrity of data flows within and between its walls imperils the trust that patrons have for this long-standing institution.