Having system in place (90% of libraries do) doesn't mean all or even most of the books they have physical copies of are available in digital form. The question

Having system in place (90% of libraries do) doesn't mean all or even most of the books they have physical copies of are available in digital form. The question isn't whether libraries can lend digital books but if they are able to lend the same ones IA did. Just because 90% of people are capable of running doesn't mean that they can run as fast as Usain Bolt.