(Bloomberg) -- The judge presiding over Epic Games Inc.’s challenge to Google’s Play Store business model said he’s not confident about setting a fee for mobile app developers without expert input.Most Read from BloombergBlinken’s Return From Davos Was Delayed After Plane Broke DownYouTube and Spotify Won’t Launch Apple Vision Pro Apps, Joining NetflixPakistan’s Army Strikes Back at Iran as Both Sides Urge CalmTrump Moves to Quash Hopes of Congress Ukraine, Border DealTrump Asks Supreme Court to