That's an enormous burden. If we require lawsuits to enforce even minor cases of consumer protection, I argue that there is effectively no actual consumer protection.
The law not working for "minor cases" (which includes cases over hundreds of dollars) is exactly the failing of the justice system I mentioned. This isn't universal, in many places you can get theft of a Mars bar or possession of tiny amounts of drugs prosecuted very effectively, all cases much more minor than the typical credit card dispute.
So, rather than having a financial system with basic consumer protections (which would allow transaction reversals and contestation), you would prefer we have a criminal justice system which aggressively enforces and prosecutes minor offenses? I think there is a weak connection between the two, particularly since most situations where we do things like dispute a credit card charge are civil matters. And, as stated above, requiring civil suits for something like disputing a credit card charge is an enormous burden, and puts the burden on the consumer. (Which will also disproportionally affect the poor.)
