I think because professional artists can’t typically make their software tools. Whereas engineers could in theory make their own tools. Naturally few do in practice though as tech has become far too large and specialized. But our roots are where our values and ideals come from.
If I start to work on a tool, then I cannot work anymore on what I actually wanted to do. And it just so happens ... that this is exactly what I did and I can just say, it usually takes way longer than the most pessimistic estimate one can come up with, so yes, one can decide to switch careers and try to get funding to (re)build what is not offered to acceptable conditions (but in my case the tool simply did not exist, though).
Just like an artist can switch career, study CS, build on his own a tool a professional company build with a team over years - and then someday work with his tool to acomplish his original work. In (simplified) theories, lots of things are possible ..
