You can get fibre in the country ...
... just the same as you can in the town or city; if you can sign up enough people to get a commercial company interested. The only problem is that it's bloody hard work! It took me over 2 years to get 1/3rd of the population signed up in my Parish and 2 other adjacent ones. But that meant that a commercial company could see the benefit and installed 1Gbps Fibre-to-the-premises to the 5 villages. And we get charged around the same, £45, for 100Mb (traffic shaped from full stream) as we did for <1Mbps with BT. (The full 1Gbps comes in at around £75pcm). Most of us have transferred out landline numbers to VOIP so that we can ditch BT completely!
So how to use that bandwidth. From my experience... Browsing is still limited by the far end ability to serve content, downloading is very fast, multi-player gaming is very responsive, Skype etc. (for talking to children at Uni) is limited by their terrible speeds, catch-up TV works as expected, remote access to my work PC over VPN is exactly the same as sitting at my work desk. I originally had 200Mbps, but I've moved down to 100Mbps and I've not noticed any difference (except with very large downloads).
Now I'm trying to get mobile phone coverage for our patch of (not very) rural Northamptonshire! (Without everyone having to buy a £70 Femtocell.)
Biting the hand that feeds IT
