It's as much fraud control as legislative compliance. From the perspective of consumers, considering a payment network as 'secure' requires fraud control - by ability to reverse fraudulent transactions and/or making it hard or expensive for fraudulent recipients to sustain operations.
In terms of fraud protection, the bitcoin network is only responsible for ensuring a double spend will not happen. I don't think it should be the 1st layer protocol's responsibility to also handle chargebacks and fraud claims... these issues need to be settled by intermediaries who are willing and able to deal with these customer issues.
