I'd expect one of the 2 phrasings to be present:

"the Court concludes that Apple is a monopolist under federal / state antitrust laws"

"the Court concludes that Apple is not a monopolist under neither federal nor state antitrust laws"

Instead, the court went with the third, which to me means "we have not ruled on whether Apple is a monopolist or not, lawsuits welcome". Is that not the right way to look at it?

The court said Epic failed to prove it in the relevant market to this case (digital mobile gaming).

Leaves the door open for Spotify to sue.