"It's not about being first. It's about joining the club. We're kind of cleaning up what NASA did in the 1960s. We're going to make a commodity of it in the 2020s,” Stern said. Stern said he's aiming for a first launch before the end of the decade and then up 15 or 20 launches total, the report said.Dozens of private space companies have started up recently, but few if any will make it -- just like in other fields -- said Harvard astronomer Jonathan McDowell, who tracks launches worldwide, it added.