That's what I figured you were at Rick.
The car companies would never add line if they did not have to. There were short runs to the metering valve just under the master cylinder. but the temperatures would cause a problem in the summer as the water would boil close to the exhaust. One fix was to increase the dispated area and drop the temp.
On top of that, they had a number of cars that were not unibody and the body mounts would come apart from the frame allowing the body to move a little. If there was not a way to allow for the lines to move, they would brake and the brakes would fail.
For a while, lines were run in standard lengths so they could be serviced just about anywhere, but that did not last long as it was expensive.