Although yeah, you do have a point that it doesn't take as much money to distribute music. That is definitely a cost savings for musicians and labels (and, as you probably know, DAW's and relatively cheap, high-quality recording equipment have been huge too). Still, not sure how big an effect these are though.
And for me, yeah, can't have surviorship bias, because I've been struggling myself for years to make a living, haha :) But part of it is my fault, am trying to be a composer, and this is one of the worst jobs in the music industry to make money in.
But yeah, do agree that it's well known that labels have screwed over tons of musicians over the past 100 years. Still, at the same time, it's probably a bell curve in terms of those that get screwed vs those that are supported and nurtured. And to me at least, the more money in the system, the more opportunities for good labels to support musicians.