The lack of success can still be attributed to Leaving Neverland. They can't go two clicks north without mentioning "the controversy". I'd say they are actively trying to snuff the Michael Jackson brand, commercially. Probably as a scapegoat to take away from actual criminal conduct, but that's another story.
Point is, there's a lot actively against MJ, and the success he's enjoying still in spite of that is a metric success.
Also, Spotify is paid off by Bieber, he's always #1 Artist, or Ed Sheeran, or whoever their favorite currently is.