I am convinced that big corporations are the key players in the fight against slavery. Today, if you compare state GDP to net profits, global corporations are bigger and more powerful than many nation states. They certainly have the ability to implement changes in their production chains very quickly if needed.
There is a fundamental difference between the privacy of banking accounts and hiding beneficial ownership in order to commit crimes. The benefits of tracking organized crime, terrorism financing and tax evasion far outweigh the risks to privacy and secrecy of accounts, which is already adequately protected by rule of law nations.