[kevinh]

To my knowledge, billboards don't fund roads. Unless they are the exclusive source of revenue for roads, the situations aren't really comparable.

[butteroverflow]

Ads don't fund the communication networks as far as I am aware. Last time I checked, my internet bill wasn't paid by me looking at ads.

[dwaltrip]

Ah, that is a good point. They aren't comparable on that aspect.

I would argue they are still comparable in terms of "autonomy of attention".