Actually, an evaluation of assets and liabilities in line with market conditions would have shown that the capital had been used up long beforehand. As the Capital Accord sets the capital requirements more conservatively than the alternative approaches mentioned, there remains a buffer for cushioning the risks which are difficult to measure - operational and legal risks, for instance.
But if mobile money eventually leads to a diminution of the role which commercial banks play in the financial system, the interest rate transmission mechanism, which relies on movements in short term inter-bank rates being transmitted along the yield curve to all other interest rates in the economy, will be weakened, which in turn will weaken the transmission mechanism of monetary policy.