I understand your questions about tablets in particular. That's kind of my bad - I should have provided a little more context. There's a move in US prisons to take away access to paper books and just give all prisoners tablets (which can be centrally administered)[1]. The high cost for accessing these devices is concerning in the context of traditional mediums of information being taken away.

[1] https://www.fastcompany.com/90249550/can-screen-time-replace...