> Libraries used to keep archives of old newspapers and publications on microfilm, and anyone who needed to research something could go and look through those archives. The IA holds a similar function today - but it's the only one with its breadth and age.

Newspapers very frequently maintain and provide public access to their own online archives now. That's also not a function the IA is even especially good at--its coverage is spotty, and unless you have an old URL, it's very hard to find stuff in the IA.

The one unique thing the IA does is have is a broad and deep collection of internet ephemera.