alt Hacker NewsIt may look like they're all easily interchangable because the UI and actions are similar (you have a viewport and can do extrudes, etc..) but fundamentally, they're all working on very different objects at their core. Blender and 3DS Max are the most alike, but Zbrush is an entirely different paradigm and so is parametric CAD. An extrude in Blender is massively different from a pad in FreeCAD.
Maybe, with a ton of time and effort the blender UI could be abstracted from most of the box-modeling approach and then pasted over a different paradigm, but It'd take tens of thousands of hours I imagine,.
You can do sculpting in Blender as well as parametric objects, similarly you can emulate most of substance designer with shaders, maybe just not _quite_ good enough that's the thing.
It feels like we have been so so close to an unified 3D content creation tool kit for many years now!