The length restriction is there because after that 100m you start running into packet loss from the resistance of the cable itself. i have in the real world been able to push that out to about 120m before the packet loss started. The resistance of cat5e cable is about 30 Oms at 100m and when you think that the voltage is only about 3.15 when it starts out then you can see the problem.

I work as a installer for a wireless internet service provide and because the service is wireless then you don't have to have a hard line for the internet to work so you can bypass the telephone and cable companies for the same if not lower price then those providers. good example is that we charge 39.99 a month for unlimited service at speeds between 6Mbps to 15Mbps