Sam Walton had plastic chairs at his Arkansas headquarters. And this was after Walmart had gone public, and Sam Walton was a billionaire already. His logic was obvious. If we buy expensive chairs, the costs get passed on to the customers. It made perfect sense to buy plastic chairs. When he traveled for business, he made a point to stay in cheap motels.
I read his autobiography a long time ago. It is a slim book, a great read.