3bn is, one assumed, being used as leverage rather than a primary mover.
If you have matching donations or can kickstart an otherwise self-sustaining process, the end-to-end cost doesn't have to add up to 3bn to be feasible with a 3bn pool of initial capital.
If you have matching donations or can kickstart an otherwise self-sustaining process, the end-to-end cost doesn't have to add up to 3bn to be feasible with a 3bn pool of initial capital.
Think of it as venture research.