Gregory Feeley’s 1990 The Oxygen Barons is the twelfth and final volume in the Third Ace Science Fiction Specials series. The Oxygen Barons is a hard science fiction novel.
The Lunar Republic arose on a very nearly terraformed Moon, effectively revolting against the investors who paid for the terraforming. Like so many revolutionary republics before it, the Lunar Republic swiftly broke into opposing factions. This was a sufficient pretext for the powers that be to order a total embargo of the Moon.
Political idealism of several flavours cannot wave away the physical reality that faces the revolutionaries.