Like. Good Faith is a legal term used in all business transactions under the Universal Commercial Code developed over hundreds of years and integrated into U.S. legal code.
Contract Law includes "Good Faith" as a matter that is determined by experienced judges and juries are instructed in its meaning when deciding contract law disputes.
We know that the financial sector is fraught with fallacies and misleading information that breached Good Faith but that's the nature of the beast, so to speak.
One has to have lots of lawyers, guns, and money to defend one's interests in a Good Faith or Contract Law dispute at this upper level of litigation. Luckily, we have all we need, imo.