[jleyank]

Probably to limit the number of simultaneous rentals, handle people forgetting to return or delete books and preventing them from wandering off to others. Win for the libraries if the cost of the service < handling all those dead trees.

[fmitchell0]

What is wrong with people 'simultaneously' being able to read an eBook?

I feel like I'm missing something obvious.

[Nextgrid]

It can't satisfy greed, that's what's wrong.

[solardev]

Publishers don't want libraries and patrons to have access to unlimited free copies for the price of one.