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Continuity mistake: When Ken Wheatley is pointing his tranquilizer gun at Zia after he shot Owen, he puts the gun in his left hand and uses his right hand to wave his men down, but mid wave, the camera cuts to a different angle and he is waving with his left hand while holding the gun in his right hand. (00:30:00)
Answer: They were sold for the sole purpose of making hundreds of millions of dollars from the auction and future sales. The buyers had different reasons for wanting them: weaponizing them, for trophy hunting, private zoos, etc. The buyers' zeal in wanting such exotic animals overruled their sensibilities regarding how dangerous the dinosaurs were and the extreme conditions needed to manage them.
raywest ★