DDoS attacks aren't aren't technical problems - they're political ones. Political problems need political solutions. Technology isn't the cause of a DDoS attack, just the medium.
And they're definitely technology, they're a tool used to attack the owner/normal beneficiary of the tool with that tool (your uplink).
It's when they try to collect money that law enforcement has the best opportunity to catch them. There is a monetary limit over which it becomes internationally interesting to the FBI,HTCU, etc, to get involved and start using international resources to track the money back and make arrests.