Youtube is still a passive platform for music streaming. It has grown fast because it was bundled with YT premium for watching videos without ads
Melon still has sizable audience size for a domestic music streaming service, and is still bigger than Genie, Vibe, bugs all added
Every streaming service is passive regardless if it's music or movies/tv shows. Netflix is the king of passive streaming but no one will argue their position as top dog
Melon should be treated like itunes back when Spotify and Apple Music overtook them; supplementary material but it wasn't the main focus