1. Geeks - will many of these live alone, constituting single occupancy?
2. Multiple users in the same home - multiple occupancy?
3. People downloading video, PS3 etc - see 1 & 2 above?
4. People working from home who won't pay for a decent connection - small businesses couldn't supply you small business prices if they were to pay for leased lines.
I wouldn't call that "only". Pensioners aside, that covers just about every domestic consumer in the UK!
The difficulty is that faster speeds will drive faster applications. But until those applications become widely adopted by the end user, where is the need for the greater speeds? Somebody has to take the bull by the horns eventually.
I wouldn't expect BT to roll out to every hamlet in the country. But if I wanted to open a health club in every small town in the UK, would it be the taxpayers job to put half the money in, on account of everyone generally needing to do more exercise?
Knowing how it works is completely different to understanding how it works.