Keith Medcalf said:
"just static content" would be more accurate ...
and using http rather than https
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.
One of the complications in this area is an extra layer of logging which could
turn into privacy invasion.
I'm pretty sure it was Comcast, but a quick search didn't find a good
reference. Many years ago, there were a lot of complaints when customers
discovered that their transparent proxy web site traffic was getting logged.
Comcast said they weren't using it for anything beyond normal operations work,
but nobody believed them. Shortly after that, they gave up on proxying.
I'm sure the general reputation of modern Telcos and Cablecos for privacy
invasion didn't help.
Keith Medcalf said:
“just static content” would be more accurate …
and using http rather than https
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.
One of the complications in this area is an extra layer of logging which could
turn into privacy invasion.
I’m pretty sure it was Comcast, but a quick search didn’t find a good
reference. Many years ago, there were a lot of complaints when customers
did you mean the ‘sandvine experiment’ that happened ~10 yrs back?
or did you mean the plan verizon had to proxy all http/https traffic from consumer (fios/dsl) links through their gear so they could replace ad content and such?
or did you mean the various (barefruit/nominim/paxfire) dns fake-answer companies that dropped your customer on their “search platform” for monetization?
fairly much all of those are a wreck for consumer privacy 
discovered that their transparent proxy web site traffic was getting logged.
Comcast said they weren’t using it for anything beyond normal operations work,
but nobody believed them. Shortly after that, they gave up on proxying.
I’m sure the general reputation of modern Telcos and Cablecos for privacy
invasion didn’t help.
it’s a rough business to be in, they say… but invading privacy of their users makes things seem a heck of a lot worse.
It’s not exactly a measurement of “user to content” but CAIDA has swarms of Raspberry Pi nodes all over the world, that constantly measure… well, a lot of things, but they continually also monitor traceroute paths to each other. If you’re looking for a “average length from any one node to any other node on the Internet” you’d likely find some good data points here.
https://www.caida.org/projects/ark/statistics/