More like because they've been here for so long that the copyrights have "expired" (i think 50 or 100 years depending on the country). Also that only applies to the music itself. The recordings are a different story.
Charles Aznavour is a phenomenal monument of French music. When he died 5 years ago, I even saw people laying flowers at the doors of the French Embassy in the city where I live.
Im honestly surprised that no one in this comment section knows those French songs.. especially for the third one, everyone says that it’s Minecraft music 💀
For the Eric Sati song there is also Janet Jackson's song Someone to Call My Lover and for the middle one there is also Blue Cantrell and Sean Paul's song called Breathe
Ah, Gymnopédie No. 1! I used to think it was composed by Debussy because it sounds similar, but it's still one of my favorites. It's a great ringtone tune, too.