They have enough money to give building the first ever BFR a shot. If it turns out good and the reusability works, they can do a lot of contracts with it, like servicing ISS, and launching a new big space telescope. From there on the advantages and possibilities of having a reusable high payload system will be very clear, and with 3-4 of them, a moon base would already be possible. We'll see what happens but the plan looks solid at least.