[dvlsg]

That's what feels strange to me, though. It's not a physical book that can only be in one place at a time, so why are we holding ourselves back with artificial limitations?

I suspect it has something to do with licensing, but I don't know for sure.

[Tomte]

Of course that's the reason. And I have no problem with it.

You may want to live in a world where a publisher sells a twenty Euro book exactly once, but that's not sustainable.

If you want more concurrent users, pay for it. The library has decided which level of concurrent users to buy.