I'm in Hong Kong, which is a super high density and everywhere-civilized city,
which means you do much more,i mean many magnitudes more, business per each meter of wire,
wire is expensive even for the old model(should be copper if i understand correctly),
and optical wire is many magnitudes more expensive than copper.
Now, imagine how cheap the internet my place is,
Firstly, the coverage of optical wire in the city is complete
And guess what, I have 100Mbps for FREE. Indeed, it's just a discount for something else but in average it is like 10USD per month.
In fact, it's the cheapest plan available in most(if not all) ISP in the market(i.e. they force you to consume, like anything else, what i meant is that the "actual" value is much cheaper,like,they can give it for free as a discount).
For most needs, Bandwidth is really useless, unless you find way to make use of it, like, you host a mirror for something,
(btw, what i really wish for is faster speed of light..or smaller earth..)
so i join all kind of p2p network i consider liberal and usable(bittorrent,ed2k,gnunet,seeks,yacy,bitcoin,namecoin),
i also host relay on various anonymity(tor,i2p) for censored network, doing this for chinese in particular.