It's really puzzling (but extremely welcome) that Blender continues to be such an open source success story. Seems rare for such complex pieces of software in a niche space to get that level of development. I wonder what the secret is.
At the same time, I'd expect it should have its Linux-moment by now and eat the world, but it doesn't seem to be the case for high profile productions.
Not sure what you mean with Linux-moment exactly, but Blender is sitting rather in a niche need compared to Linux which sit just above the hardware. So in that sense, Blender can’t have a Linux moment: it won’t be deployed in most servers, it won’t be embedded in a mission to Mars…
At a certain point in time Linux became the best platform available to base wide variety of projects on, so the industry followed and made it a de facto standard. It seems, at least superficially, that Blender has all the capabilities needed for wide industry adoption, but it doesn't seem to happen. Obviously talking about industries related to video production, gamedev etc.