Edit: Scratch that. What I'd like is a high speed consumer cable account that I could proxy into.
I have a raspberry pi attached to the wall of a home which is not my own. It's in a country where I occasionally want to be (in a geoip sense of "be"). The rpi maintains a VPN connection to me, so I can reach it even though it's behind a NAT middlebox that knows nothing about it.
I'd gladly pay someone to access a portion of their bandwidth - at least enough that I could stream content.
Potential founders should consider the costs of providing tech support for a tunnel that crosses two NATboxes, both controlled by strangers.
Anyway, it was just a thought. It's possible it's impractical :-)