I would probably recommend that you go down the path of regulation and set a competent authority to look at the economics of this, because it often gets played out in political theatre, and I think it doesn't lend itself well. That's not to say that some aspects, particularly for the code of conduct, may be more suitable to voluntarism.
This is about money at the end of the day, and very large amounts of it. I mentioned $60 billion. A handshake agreement or maybe a little better than a handshake agreement is obviously less compelling than a proper regulatory approach to it.