As soon as a payment touches any of the existing networks, it's at risk. The only way to fix it completely (or at least significantly improve the situation) is to have a system that's completely isolated and properly secured; i.e. every payment authorization requires true multi-factor authentication.
I wouldn't mind so much if consumers were actually advised of their ability to use these chargeback facilities, but apart from Direct Debits it seems almost no-one gets told about this here in the UK. Certainly no bank or credit card service I used had ever told me before I started running businesses and seeing it from the merchant's side. The one time I got screwed as a consumer and a chargeback would have helped because it wasn't really worth the time/hassle of figuring out the courts' small claims procedure, I didn't know I could do that so the merchant won by default anyway.
So right now, the do-I-have-it-or-don't-I question over funds is a huge burden for merchants here, yet the supposed protection it offers to consumers here is mostly illusory as well. Nobody wins from this kind of arrangement. The entire payment services industry needs to die and be replaced by something fit for the 21st century, where you simply can't transfer money electronically without robust proof of who you are, and you can't accept money electronically without robust proof of who you are, but given such proof transfers are final as soon as they are confirmed. Is this really such a crazy idea?!