> Also, if they end up being highly reliably reusable, wouldn't that slow down the production of new boosters, thereby making them much more expensive to produc

> Also, if they end up being highly reliably reusable, wouldn't that slow down the production of new boosters, thereby making them much more expensive to produce? They still have to build expendable second stages for the falcon 9 and that uses practically the same engine (it's optimized for vacuums). Also, I doubt rocket companies gain much from economies of scale considering how low launch rates are so scaling back production probably doesn't increase costs much.