Modern entertainment platforms keep users hooked by blending data with design....

https://wiki-net.win/index.php/Why_Apps_Are_Obsessed_with_Badges_and_Achievements:_A_Practical_Guide_to_Gamification

Modern entertainment platforms keep users hooked by blending data with design. Services like Spotify use deep personalization and analytics to curate your feed, while cross-device syncing lets you pick up exactly where you left off