There's already a ton: https://en.wikipedia.org/wiki/List_of_private_spaceflight_companies#Launch_vehicle_manufacturers https://en.wikipedia.org/wiki/List_of_pr

There's already a ton: https://en.wikipedia.org/wiki/List_of_private_spaceflight_companies#Launch_vehicle_manufacturers https://en.wikipedia.org/wiki/List_of_private_spaceflight_co... Note that Virgin Orbit's niche (small plane-launched rockets into unusual orbits) is already served by the Pegasus rocket, previously by Orbital Sciences and now owned by Northrop. There's doesn't seem to be much demand for it though.