Apple Sued by App Developers Claiming Price Fixing

The app store is what killed the mac ecosystem. Remember when we had small development studios like Monster, Freeverse and Made By Sofa? An active app developer community that would share ideas and code because they wanted to make the best apps, culminating in the Appsterdam movement, where people traveled across europe just to meet up.

All gone. Nobody can make a living of developing 99ct apps, and most iOs and Mac apps nowadays are super buggy and nothing like the polished marvels we had back then.

I miss those days...

Are there any legal grounds for this? Isn't the store a private property that can be run using arbitrary rules that apple chooses?