To the best of my recollection, this lost story takes place in the not too distant future and involves various corporations putting manufacturing habitats into earth orbit. The MC is a precocious child of a couple working for one of the corporations aboard one of these habitats.
Being a bright child, he invents (or is involved with inventing) some thing or process that makes a shit-ton of money. Said money allows him to buy intra-orbit space craft and increase his profits to the point of being able to buy a large chunk of the moon's surface.
Amongst all this he does something that pisses off governments or corporations and he is attacked, both on the habitat and on the surface of the moon. He retaliates with a kinetic bombardment of the offending country – IIRC, that was China.
Anyway... this is what I can remember of the tale – can anyone put a name and author to it? Thanks!