[rbanffy]

Consider you'd need to invest not only in manufacturing the rockets, but also on shipping them to launch sites, increasing launch site capacities to deal with extra launches, adding extra capacity for fueling the extra rockets, to prepare and mate the payloads (that'll need to be built by someone, somewhere)... Nothing there is really cheap.

In the end, the rocket is not really the most expensive part. It's just the part that, until recently, was expensive and thrown away after a single use.