"What do holds have to do with the cost of digital books?

This may seem surprising, but patron holds are the single biggest factor in rising costs. To maintain reasonable wait times, the Library buys additional licenses of a digital title when patrons place more holds on it. That means that when hundreds of patrons place holds on a single New York Times bestseller, the costs of “buying down the holds” can quickly become astronomical."

How odd - I know it's the licenscing and I can understand the reasoning behind, but at a distance it seems like ritual almost. When they get the e-book, the data is there, and when you hold it, you get a copy, the "original" is untouched, but the library has to act as if it was unavailable.

It feels like how electric cars add artifical engine sounds.