Looks like the opposite of that. Every operator will be able to use the single connection from exchange to home.
"Local loop unbundling (LLU or LLUB) is the regulatory process of allowing multiple telecommunications operators to use connections from the telephone exchange to the customer's premises."
It means that any competitor isnt guaranteed access to the line that is already provided. This makes sense as your local loop (in the internets case) may be fiber optics, may be coaxial cable, may be telephone. So if you get FiOS, comcast won't be granted use of the fiber by law, they'll have to get verizon to agree to use of it in a separate contract.
"Local loop unbundling (LLU or LLUB) is the regulatory process of allowing multiple telecommunications operators to use connections from the telephone exchange to the customer's premises."
http://en.wikipedia.org/wiki/Local-loop_unbundling