Is industrial design a desk job?

I’m a mechanical designer who started out as a mold maker (plastic injection molds) for 16 years. So my ideal job would be to design a product and go to the shop and build prototypes and make changes until it is a viable product. I have worked at only one place in the last 24 years that I was able to do that. I was told by one company that I was more valuable sitting behind a desk and another said it would cause problems with the insurance pukes. Seems to me that a person like me with my unusual skill set would be invaluable to a company. I can gain more insight into the design for manufacture and assembly by doing it myself than any feedback you could ever get by throwing the design over the fence to a shop to make. Who the hell knows I give up.