At German train station the taxis form a line. You are expected to take the first car in the line. If you try to take another one most drivers will tell you to go to the first car.
And it is how taxi lines work or worked in the US. App-based hailing changed this, since there is no longer a designated physical place where the line would exist. Building a virtual-line, makes plenty of sense, and in hind-sight was something overlooked.
This happens in Norway as well. Unfortunately different companies charge different rates, so I refuse if the first in line is one that charges more than others.