Hear me out...
#13
I hear that alot, too. They have a culture opposed to conglomeration into another company. Matter of fact, Cummins was owned, for a while (in the 40's and 50's) by Briggs corporation (now Briggs and Stratton). After the founder of Cummins diesel had sold the company, he invented the engine brake and presented it to the board of Briggs and they literally laughed him out of the room. He went and started Jake Brake company and until he died, he refused to sell the product to Cummins and wouldn't allow engineers to design a product for a Cummins engine brake. That's how the infamous and really bad C-Brake came to be. The stifling of innovation is the stated reason for not selling to Chrysler or Ford.