I think that the question of whether an industry would benefit is a hard one. It depends on your perspective and what benefits one is gonna aim for.

I think that if I had to choose one category, I’d do CAD.

So, this covers a wide range of different industries and roles. 3D and 2D mechanical engineering. Chip and circuit board design. Designing 3D objects for 3D printers.

There is open-source CAD software out there, of varying degrees of sophistication and for different purposes. But in general, I kind of expected to stumble into a huge wealth of world-beating software. I mean, it’s a field with a lot of technically-oriented people who don’t mostly compete on the software as their core competency. I could see a lot of people wanting to scratch itches, and the situation to be kinda like it is for mathematics software, with strong open-source entrants. But that isn’t the case. There’s very much usable stuff, depending upon what you want to do. But the big boys in the field are proprietary.

There’s FreeCAD. I use openscad to do code-oriented design of objects for 3d printers. I wouldn’t call Blender a CAD package, more a modeler, though it’s adjacent to the field and there is some CAD-related add-on stuff. There’s QCAD. I don’t know how practical BRL-CAD is today, but it’s out there.