Just recently where I work, we dropped a major supplier of single board computers because their customer service was almost entirely unresponsive the one time we needed their support. We spent a million or two a year with them. Small potatoes in the big picture, but still significant money that is now going to one of their competitors.
That change was a significant cost to us as well, as it meant that the system we were using the boards in had to be redesigned to accommodate a different board.
That change was a significant cost to us as well, as it meant that the system we were using the boards in had to be redesigned to accommodate a different board.