SoundCloud overhaul their royalty model. Introduce fan-powered royalties

A lot of common sense from SoundCloud with this.

Is there a sensible argument why Spotify doesn't go this route? The only one I've heard is that music publishers hold too much power, and shifting more value onto the artists would threaten Spotify's core business by having publishers object to that shift.

Maybe someone from the industry can comment, it just never made sense how the music industry seems to be the slowest to embrace this shift into independence/patronage, while being the ideal industry for it, since it's all about fandom and the personal draw of an artist/band. Or that shift is happening, just not visible to us laypeople?