I think you see mostly German audiobooks because there are a lot of German audiobooks on Spotify and comparatively few English ones.
These two quotes show the special situation of German audiobooks on Spotify:
> Usage of [Spotify] was skyrocketing in Germany. "I couldn't figure out why, and no one seemed to have an idea," recalls the soft-spoken Swede. So he boarded a plane to Berlin, where he huddled with his team and soon discovered that the German music labels own the rights to most audiobooks in the country and had been uploading them onto Spotify. "By accident, we ended up becoming one of the largest audio platforms, period, and one of the largest audiobook platforms in Germany," he says. https://www.hollywoodreporter.com/features/spotify-aims-become-worlds-no-1-audio-platform-1256162
If you try to find information on the web about English audiobooks on Spotify, you will find articles such as https://profounder.com/audiobooks-on-spotify. You will notice that it talks about quite old books that are available (whose copyright has expired):
> For example, you can basically listen to all of William Shakespeare’s plays, including tragedies such as Hamlet and Julius Caesar or historical dramas such as Henry V and Richard III. You can also listen to the classic F. Scott Fitzgerald, The Great Gatsby, The Adventures of Huckleberry Finn by Mark Twain, Pride and Prejudice by Jane Austen and tenebrous works like The Shadow of Innsmouth by H.P. Lovecraft.
Still, there are around 1600 English audiobooks on Spotify collected here: https://profounder.com/spotify/ It seems that I can access most of them, though not all (I live in Hungary and have a Hungarian bank).
That's not a solution. As paid customers, we should have the freedom to choose which language we consume your product. Even in family plans, for that matter. My wife is German, I'm Brazilian and we communicate in English, for example, and there are more people in a similar situation than one might think. But most importantly, language is often not a simple matter of choice for people, in contrast to a company that is present worldwide. If the problem are regional distributing licences (which is ridiculous in the globalised economy we live in the 21st century), open at least content in English, as a first step, or allow users to consume your product entirely based on their devices' regional settings. To do nothing about content's language is a big middle-finger for your Premium customers.