This tends to be true of mamy of the artists that chart, but less so for indie bands. I see Major Parkinson's Blackbox and Magna Carta Cartel's The Dying Option as two of the best albums of the century so far, for example.
If we're talking popularity vs indie, those bands seem pretty mainstream. In my head indie artists that put out single songs on Soundcloud etc don't do albums until they grow big, so pretty much the opposite (more popular = more album focused).