One major problem with Blender is that it is GPL which prevents binary third party integration with non-GPL code. For example, the substance designer run-time engine can’t be integrated into Blender. Essentially, Blender isolates itself from the rest of the world in this regard. I can’t imagine professionals dealing with this and investing a bunch of time and money into Blender, when they can just get commercial non-GPL applications (with a much larger pool of talent that knows how to use them) that don’t have this limitation.
I like Blender personally. I use it as a hobbyist. But it would not be my first choice of tool in an art pipeline for a commercial project. Obviously it just all depends on the situation and what you’re willing to deal with.