[rdl]

Fundamentally ddos is a problem and will continue to be one solved best by scale (and tech, but scale is critical) until all networks apply egress filters everywhere they interconnect. This is probably not happening in the foreseeable future unless networks consolidate (and if they do, then each is operating at scale as well).

It is a pretty pessimal situation. I think you might see critical services run over clean pipes networks, rather than the public internet, which also is a return to scale.