Hahah no. Although think of brands like Oban, VA Composites, etc. They don't have a factory making shafts or any machinery. They are ordering shafts (and decent ones) from a factory to their own specs. I'm not saying that to make them out to be lessor, just that it can be done.
You just described the bourbon market. But I digress.
In my own personal experience, my GD shaft feels and performs better, than anything I've gamed. Worth every penny.