Other mistake: In Jurassic World, we are told that the Gyrosphere can stop a .50 calibre bullet. When it falls into the sea in this film, Owen shoots some holes in it using a pistol and manages to prise the door off using a small knife.
Other mistake: When the Indoraptor bites off Wheatley's arm, there is absolutely no blood coming from such a massive wound. The remnants of his torn shirt are completely dry.
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 ★