I've seen one of these incidents in action. A 737 lined up on a big fat taxiway with a 777 rumbling towards it from the far end. Fortunately, ATC noticed and cleared the 777 off the taxiway and pointed out the error to the shocked crew.
...probably two minutes before the incident that crew could never have believed they could make such a mistake and would also have been "amazed".
Now they know the reality. Stay humble.
Well said Framer. The reality is perfectly competent pilots make these errors. Therefore, in my view, it can happen to any other competent pilot.