I think that my CDs ripped to FLAC files on a NAS drive sound better than streaming Tidal or Qobuz, and also better than through my CD player. But the differences are very, very subtle. I spend most of my time streaming for the convenience and for exploring new artists and music.
I ripped all my CDs just as Tidal was coming out. Would I rip them all today, knowing that I do most of my listening via streaming? Probably not for the sound quality difference, but perhaps just to have access to music for those times when the internet is down.