The library is also a great source of DVDs.
Technically illegal to rip from a library DVD and having movies in a library is very much as US thing.
Having movies in a library is definitely not a US only thing.
Here in my European country, most if not all libraries carry movies on DVD and Blu-Ray, including the very latest releases.
I'm pretty sure the same goes for most European countries.
When you are looking to get content for children it becomes even harder and more expensive.