At some point I wonder if business incentives are a problem Eg does Spotify pay more to play the original than the one by The Civil Wars? If so, how much mone

At some point I wonder if business incentives are a problem Eg does Spotify pay more to play the original than the one by The Civil Wars? If so, how much money are they saving by such "bugs"? And if not, how is popularity (use an objective ish metric, eg wiki page length) not a major feature?