>> The air interface also benefits from more compact traffic (see why Nokia
>> or Opera set up their system, see why Google is working on SPDY now)
> Yup, and provider-level proxying doesn't do a squat in these cases.
Please explain why. Because there is zip technical differences between
> There is another choice - secure your damn endpoints
Anyone who pretends he is able to secure thousands of endpoints (especially end-user endpoints where the user will actively work against any securing to get the latest shiny stuff) is a damn liar. The best you can do is to try to secure them, and that includes securing their network accesses too (which is infinitely easier as there are less nodes to take care of, they don't have en-users connecting locally)
>> Besides: mail already works hop-to-hop.
> And interhop transport is definitely not proxied.
Do you realise how meaningless your sentence is? You can't have an intermediary without another hop