Large is relative. They have a larger number of Songs, but the actual choice is quite small. It's limited by age and countrys, and even types. They Catalog consists mostly of popular western music and music from the last 10-15 years it seems. Non-Western music or less popular music from the 20th century is quite hard to find on spotify, or any other music-streaming-service. Youtube is a better source for this and they have limitations too. Spotify used to have also audiobooks, but I think they disappeared in the meanwhile because of competing commercial audiobook-streamingservices.
We live in a great world today with all the information and entertainment cheaply available for everyone...as long as you just follow the local mainstream and have not much demand on specific details. It's great and sad at the same time.