I'd argue that's just content (though admittedly a lot of it).
"just static content" would be more accurate ...
I would further argue that you can't cache active Web content, like bank account statements, utility billing, help desk request/responses, equipment status, and other things that change constantly.
There were many attempts at this by Johhny-cum-lately ISPs back in the 90's -- particularly Telco and Cableco's -- with their "transparent poxies". Eventually they discovered that it was more cost efficient to actually provide the customer with what the customer had purchased. --- The fact that there's a Highway to Hell but only a Stairway to Heaven says a lot about anticipated traffic volume.
-----Original Message----- From: NANOG [mailto:nanog-bounces@nanog.org] On Behalf Of Stephen Satchell Sent: Wednesday, 21 November, 2018 20:45 To: nanog@nanog.org Subject: Re: Internet diameter?
On 11/21/2018 07:32 PM, Ross Tajvar wrote: