You can pirate whatever shows, including ones that can't even be legally sold, and run your own service.
If you add the Arrs suite, then you can also get dynamic additions of shows you watch, and just have them show up.
And well, if Meta and ilk can use pirate libraries in a commercial setting, I see nothing wrong in piracy in a non commercial setting.
I used this guide - https://guides.viren070.me/stremio
Seems like changes .com to .de works with every item i can find. Some just won’t be deliverable in a different geo.