I think one of the challenges is that there is usually extra capacity to the ISS, and so you at least initially you need to compete on convenience not money (by the way, I should note that we funded Bagaveev in the last YC batch).
The most convincing thing to investors will be an order book--ie, go convince people in that backlog to say they will pay you a certain amount for future launches if you can build a reliable rocket. If you have that plus credible initial technical development you can probably raise some money.
The most convincing thing to investors will be an order book--ie, go convince people in that backlog to say they will pay you a certain amount for future launches if you can build a reliable rocket. If you have that plus credible initial technical development you can probably raise some money.