What does that even mean? Credit card companies exist (and make money) in both common law and civil law countries.

Or you could even look within the US and examine the singular state that is a civil law jurisdiction and there is no real impact vs the other 49 states. In fact I’d wager a guess very few people even know 1 of the states is a civil law jurisdiction because it has very little impact in practice.

Court decisions in common law jurisdictions have important and long-lasting effects, not only on the case at hand, but for decades (or centuries) to come on things you wouldn't think can be remotely related to the case.

It's not like that in civil law jurisdictions. Had this case been in France, the decision on credit card would not have created a precedent that Uber and AirBnB and App Store could use to their advantage, because the concept of precedent does not exist in the same manner in France.

And Louisiana and Quebec are not civil law jurisdiction, they are mixed systems because they are still subject to federal laws and supreme courts, so they have civil and common law both.

I know the difference between common law and civil law. I just didn’t understand:

> “multiply that effect by some unknown but really large number and you'll arrive at the total impact”

There are countless comparative law articles on civil/common law systems, it’s not exactly clear this “impact” you’re trying to measure. I suppose you could try to determine the number of codified laws in a civil law jurisdiction vs the number of original cases cited in published opinions in a common law country. But even with a total number of cases that relied on stare decisis in rulings, I just don’t know what impact that reveals.

If it's a problem then it can be fixed through legislation, no need to change what's been litigated.