> 1) I imagine a hospital that performs surgery via telepresence. This seems a pretty clear area where I would really want the opportunity to pay more, to ensure that the connection between the surgeon and his robot never even suffers the slightest amount of jitter. This is life-and-death, and I can't see why people would object to a right to pay more for higher-priority for this traffic.

Just how would that work across multiple ISPs? The application begs for a circuit.