I am sure you will find that those are most companies minima, what people are getting commands at is only a function of expansion or lack there of. The only airline type requirement I have seen is with upgrade from relief pilot or second officer as some airline call them to command requires 6 months as second in command prior to command training. (paid at command pilot rates though)
Most airline companies I have had experience with have no internal published command minima except to reflect that in the rules. Some GA operations I know of have a command minima that is totally flexable depending on pilot supply.