2-3 flights is still quite a bit of cost-cutting, and some SpaceX Falcon 9 boosters have flown more than 30 times; the median number is about 12, often very soon after the previous flight.
We are not talking about forever spacecraft, and even Falcon 9's reusabilility is partial (the second stage is lost), but even what Falcon 9 has achieved allows for very rapid progress, due to the short feedback loop, including progress in reliability.
We are not talking about forever spacecraft, and even Falcon 9's reusabilility is partial (the second stage is lost), but even what Falcon 9 has achieved allows for very rapid progress, due to the short feedback loop, including progress in reliability.