That is not entirely accurate when you have a business ( Apple Music ) competing against another business with the same baseline cost and additional advantage of non 30% cut. This is perfectly fine in market like US. But I doubt this will sit well in EU. Which is where the complaint is launched.
This isn't the same as Apps, where you could have less developers, or cheaper developers from different countries, the baseline cost are hard to determine. And the productivity and creativity of every individual are hard to measure. But Streaming Music, most of those cost are in Payment to labels. And it would not be hard to justify this cost in court. Again, this would not sit well with EU.
This is an Anti-Competitive advantage, it was all perfectly fine until Apple decide to launch Apple Music. Which I have been saying for years should not have happen in the first place.
Its Apple's marketplace.... how is it anti competitive if they control their own marketplace.