https://www.cnet.com/news/spotify-apple-app-store-abuses-power-to-stifle-competition/

The conflict pits Apple, a gadget giant whose App Store is essential for mobile services to thrive, against the biggest subscription music service in the world and one of the most popular iOS apps. If the complaint snowballs into regulatory action against the App Store -- and the EU has demonstrated an eagerness to take on tech's abuses of power lately -- it could have implications for the business fortunes of many apps you use every day. 

Spotify went so far as to create a cuddly animated video about its Apple grievances with Apple and built a website to detail them.