I fully agree, but it feels like this falls apart in practice.
Zipper merging feels like the "masking in public" of driving - it requires you to value the good of the collective over the individual, and people will make irrational choices that **feel** like they are in their individual best interest, even when it winds up hurting them more in practice
It is one area where autonomous vehicles would excel, since it removes the human element from system-level decision making IMO