Dont you worry about fibre and prises. Remember all those bringing fibre are in business and want return on their investiment.
Furthermore not everyone is going to be connected broadband-wise. demand for internet and related servises is also set to rise.
So do your research well and define your target market - may be those not able to have computer & personal internet connection.
I suggest you talk to service providers and find out their flexibility in prices incase the fibre arrives.
i too