Books were very precious. A 5th century monthly salary of a scribe was enough to buy a house.
Yet, 99%+ of written data from Greece, and Rome is lost. We lost both archival data, and literature. First to rot, second to book burning.
Literature was state sponsored for most of classical period, and "casual" writing all about propagating Greek culture to "not-so-Greeks" (Thracians, North Africans)
Literature was subsidised not so much for elites, but to create more elites
Luddites, and book burners are your typical strongman elite who rule by swinging a club.