Indie stuff is on Bandcamp. Mainstream stuff, iTunes has the biggest collection, but Qobuz and 7digital more reliably have lossless (a lot of the iTunes long t

Indie stuff is on Bandcamp. Mainstream stuff, iTunes has the biggest collection, but Qobuz and 7digital more reliably have lossless (a lot of the iTunes long tail is stuff encoded in the mid-00s) and work without a dedicated client app.