Yes. It's a very fair question as to why public funds are required if there's a possibility that private funds could fund some of these investments. The purpose and the mandate of multilateral development banks is to invest where it hasn't been proven for commercial interests.
When MDBs make investments, including for the Asian Infrastructure Investment Bank, they're required to pass an additionality test. That's asking the question, "What does the MDB bring to this project that would not otherwise occur through purely commercial finance?”
In some cases, it's as simple as the returns to private interests would not be high enough, but we recognize that there are public benefits here that justify a public investment. It could be that the risks are too high to a private investor, and there might be an opportunity for public finance to find ways to reduce that risk.