It's difficult to get those kinds of creatives to donate their time (trust me on this, I'm always trying).
I'm an ex-artist, and I'm a nerd. I can definitively say that creating good designs, is at least as difficult as creating good software, but seldom makes the kind of margin that you can, from software, so misappropriation hurts artists a lot more than programmers.
I don't, as a rule, ever ask artists to contribute for free, but I still occasionally get gifted art from kind folks. (I'm more than happy to commission them for one-off work.)
Artists tragically undercharge for their labor, so I don't think the goal should be "coax them into contributing for $0" so much as "coax them into becoming an available and reliable talent pool for your community at an agreeable rate". If they're enthusiastic enough, some might do free work from time to time, but that shouldn't be the expectation.
If it is your job, then go do it as a job. But we all have jobs. Free software is what we do in our free time. Artists don't seem to have this distinction. They expect to be paid to do a hobby.
It usually involves developing a design language for the app, or sometimes, for the whole organization (if, like the one I do a lot of work for, it's really all about one app). That's a big deal.
Logo design is also a much more difficult task than people think. A good logo can be insanely valuable. The one we use for the app I've done a lot of work on, was a quick "one-off," by a guy who ended up running design for a major software house. It was a princely gift.
Because it's a different job!
Your post is like asking, "Why is breathing free but food costs money?"
There’s a very good reason for me to be asking for gratis work. I regularly do tens of thousands of dollars’ worth of work for free.
Software people love writing software to a degree where they’ll just give it away. You just won’t find artists doing the same at the same scale. Or architects, or structural engineers. Maybe the closest are some boat designs but even those are accidental.
It might just be that we were lucky to have some Stallmans in this field early.
I think this is because there are plenty of software nerds with an interest in typography who want to see more free fonts available.
Not sure how that happens with a painting, even a digital one.
But professional graphic designers, train to work in product-focused teams. They also are able to create collaborative suites of deliverables.
Most developers will find utility in the work of graphic designers, as opposed to fine artists.
But more importantly, most of them don't really care beyond "oh copyright's the thing that lets me sue big company man[0]".
The real impediment to CC-licensed creative works is that creativity resists standardization. The reason why we have https://xkcd.com/2347/ is because software wants to be standardized; it's not really a creative work no matter what CONTU says. You can have an OS kernel project's development funded entirely off the back of people who need "this thing but a little different". You can't do the same for creativity, because the vast majority of creative works are one-and-done. You make it, you sell it, and it's done. Maybe you make sequels, or prequels, or spinoffs, but all of those are going to be entirely new stories maybe using some of the same characters or settings.
[0] Which itself is legally ignorant because the cost of maintaining a lawsuit against a legal behemoth is huge even if you're entirely in the right
Another thing is that the vast amount of fan fiction out there has a hub-and-spoke model forming an S_n graph around the solitary 'original work' and there are community norms around not 'appropriating' characters and so on, but you're right that community works like the SCP Foundation definitely show that software-like property of remixing of open work.
Anyway, all to say I liked your comment very much but couldn't reply because you seem to have been accidentally hellbanned some short while ago. All of your comments are pretty good, so I reached out to the HN guys and they fixed it up (and confirmed it was a false positive). If you haven't seen people engage with what you're saying, it was a technical issue not a quality issue, so I hope you'll keep posting because this is stuff I like reading on HN. And if you have a blog with an RSS feed or something, it would be cool to see it on your profile.
Graphic artists are creating graphics editors (Gimp, Krita, Blender, ComfyUI, etc.) with tons of options.
I don't know if that qualifies as "getting ripped off", but it's not exactly paying me either.
Developers seem to have a product that people can actually attach a value to, but art and music; not so much. They seem to be in different Venn circles.
In all of it, we do stuff because of the love of the craft. One of the deeper satisfactions, for me, is when folks appreciate my work (payment is almost irrelevant; except for "keeping score"). It's pretty infuriating, to have someone treat my work as if it is a cheap commodity. There's a famous Star Trek scene, where Scotty and his crew are being disciplined for a bar fight with some Klingons[0], and Scotty throws the first punch. I can relate.
This says more of your perception I think. Many people attach value to art and music. Many people do not attach value to software.
