Two examples off the top of my head: 1. Instantaneous stock transactions from anywhere in the world. (quantum communication/entanglement) Offers a substantial RTT improvement on current trading systems.

2. High frequency trading based on quantum prediction algorithms. (Quantum information theory) May provide for HFT algorithms capable of producing predictions based on an exponential number of information streams. E.g. imagine making future investment decisions based on _all_ trades that happen in a span of time.

@ me if you decide make a company to do either of these things.