It would depend on the generation of CP/M. CP/M 1.0 and 1.1 had Gary Kildall dealing with it when he came off duty from a nuclear submarine. CBASIC (from Compil

It would depend on the generation of CP/M. CP/M 1.0 and 1.1 had Gary Kildall dealing with it when he came off duty from a nuclear submarine. CBASIC (from Compiler Systems aka Gordon Eubanks) dated from the same period and was also a part time activity for a nuclear sailor. CP/M 3.0 was mature - you had a lot of professional compiler companies like Prospero, Borland, FTL, and HiSoft, but by that stage. Some of them, like Prospero and HiSoft dated back to the CP/M 2.2 era, and I got the impression that they had three or four staff.