Question: The opening scene, as well as several others, shows Kaiju skeletons lying on the beach. In the first film, Kaiju bone power was $500 an ounce, used as a aphrodisiac. If that is the case, why is there 10s of millions of dollars just lying on the beach deteriorating?
Question: If Kaiju can be killed by dropping something heavy on them from orbit, why spend all that time and effort on Jaegers when a satellite defence system armed with tungsten smart rods would have done the job?
Answer: Each new Kaiju is adapted differently, often based upon what has killed previous Kaiju. This is why the Jaegers have such varied designs. If they relied upon a satellite firings rods from space, there would be no defence when a new generation of Kaiju arrived, adapted to this tactic. Additionally, producing a sufficient number of satellites to cover the entire planet would be a huge task, whereas the Jaeger technology already exists.
Answer: The film never addresses this, and in fact the kaiju black market is never even mentioned. Any answer would be speculation. You could argue that it has been a decade since the events of the previous film and in that time the kaiju black market could have collapsed for any number of reasons (lack of demand, procurement costs, government regulation, etc). We must also consider that the writers were not concerned with consistency between this film and the previous film. Since Hannibal Chau does not appear in this film, nor is he mentioned, the idea of a lucrative kaiju black market appears to have been dropped. Since this film focuses instead on a jaeger black market, it might have been a conscious decision by the film-makers to ignore Hannibal Chau in this film to avoid confusing new viewers who didn't see the original film.
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