Why hasn't networking followed Moore's Law ?

Andy Bechtolsheim's keynote at NANOG55 in Vancouver looks into what's been going on with networking versus Moore's Law:

Follow the link to his slides in PDF.  There are some fantastic graphs on:

1. Server 10/40/100G Adoption Cycle
2. Total Datacenter Switch Revenue by Protocol & Speed

Today's custom switch silicon support 64 10G ports on a single chip but forecast to scale by 4X in the next 3 years.  He wraps up the presentation looking into ways to alleviate the current high cost of optics slowing down 40G/100G adoption.