Nix and NixOS have had a similar sort of effect on me as Gentoo and FreeBSD have in the past. They have helped to expand my consciousness in the realm of systems administration and have helped me achieve new heights with my low latency audio configuration. For this reason, Nix and NixOS have become indispensable to my workflow.
NixOS introduces a new form of declarative configuration, fusing Gentoo's highly configurable nature with BSD's unified configuration file approach. For me, it's absolutely perfect until my own laziness bites me in the butt. If you want to do a gentle dive into Nix, resist the temptation to go full "NixOS" and learn the Nix build/environment system first. It will make things a lot easier for you in the long run.
I do media engineering related stuff, things related to media codecs, DSP, and p2p networking. The work I do during my day job is often somehow relevant to my music work.
For example, I used to work in VR, which enabled me to begin exploring ambisonics in my music.
> there's a never-ending stream of passionate people happy to produce said content altruistically out there
This is the concept that is most frequently left out of otherwise thoughtful analyses on the topic at hand.
Although I would not label the motivation as purely altruistic, what many people fail to realize is that people who create art of any kind, and have honest motivations for doing so, are going to be doing it no matter the profit potential. Personally, I am a music composer [0] and I must make music. I am so unconcerned by profit that I have given all of my work away for free for more than a decade. I do all of my album releases on a podcast feed so that people never have to pay money, accept the terms of service of Spotify, or be raped by ad tech just to hear my work.
To me, payment is the fact that people heard my work. On that metric alone, SoundCloud has given me a lot more "payment" than any other online service out there, since it was so apparent when people did engage with my work, and those engagements were very meaningful to me on the whole.