Spotify is often credited as the music service most in tune with the 'pirate' mentality, having converted millions of former file-sharers in recent years. Interestingly, according to writer and researcher Rasmus Fleischer, a decade ago the site actually populated its beta with pirate MP3s, including some that were only available on The Pirate Bay.
Google also seems to pad their library with stuff uploaded to YouTube, which I’m pretty sure includes stuff not uploaded by authorized individuals.
Music streaming services are crooked AF
Correction. The RIAA is crooked as fuck.