LOL. You can wait a few minuets longer for that piece of data you need on bittorrent. No one is suggesting blocking bittorrent completely. You will still have access to all the data on bittorrent.
People will have to share the bandwidth available to this community. To do that efficiently, put standard, lower bandwidth transmissions first (like http, POP3, https, etc) then rarer higher bandwidth protocols (including VoIP and bittorrent). Why anyone would be using VoIP if their internet service was poor is beyond me, quit hogging bandwidth and get a standard land line. Prioritizing protocols can give everyone faster internet for most normal things.
Clearly the best solution is to get more bandwidth, so people can use VoIP effectively, or use bittorrent without slowing down their neighbor's connection.