In Europe (and currently in the USA), Spotify is still the most used streaming service according to Statista. Also the free account allows Spotify Connect to be used on streamers if the appropriate Spotify SDK is included in the firmware. Can this be expected at Acrylic with an update? Especially students prefer this service for budgetary reasons.
Tidal, Deezer, Qobuz are niche products for audiophiles who can also afford a Roon account.