Rather make that "no country other than the US and UK+Commonwealth countries". These two countries are probably the only ones in the world that haven't suffered any kind of comprehensive revolution in the last 100 years, and it shows.
Not just in the absurd amount of precedence cases or the existence of "case law" in general, but also in issues that directly impact the functioning of democracy (i.e. US voting being on Tuesdays because back 200 years ago Sunday was for church visits, Monday for traveling on horseback to the voting booth and Wednesday back home - made sense back then, nowadays it serves as a very effective tool to disenfranchise poor people from voting) or threaten the foundations of the existence of life (hundreds years old water claims that nowhere near closely reflect the actual cost of the water, leading to farmers and Nestle running unsustainable operations just "because they're allowed" without thinking if what they're doing can permanently destroy aquifers).
Every other country has had all that historical baggage unceremoniously dropped.