Simply becuase someone has to pay for the infrastructure needed for that piece of data from your pc to the server and vice versa.
Theres all sorts of peering agreements involved with different companies owing the various different networks your packet of data will travel across to reach its destination.
Fibre might be capable of several of taking several hundred Gibabits+ but at the end of the day the data can only go as fast as the bit of kit on the end of the fibre can send/recieve it, it all boils down to cost.
Someone has to pay for the equipment used to transfer the data also the equipment is somewhat expensive so its not like they can afford to replace it eveytime a new bit of kit comes out just becuase its a little bit faster.
Im sure you could get 8mbit MAX speed all to yourself if your prepared to pay for the pipe between you and your destination (and we're talking a large amount here...)
Why should everyone else suffer [censored] speeds just becuase 1 person happens to want to use bittorent all the time, broadband is only available at the prices it is becuase the service is contended.
Of course Communcations providers still need to invest in new tech to keepup with demand, but my point is as nice as 8mbit + all to myself would be its certianlly not affordable.
Like most people i don't like the idea of traffic shaping and fair use policys but i accept it as needed to stop a few people from hogging all the bandwidth.
Edited by dragon2611 (Wed 31-Jan-07 23:38:12)