Jack did not want to deal with the incident with the virus because he was one of the stakeholders of Watson corporation to produce the bio-weaponry. They already have a buyer who wants to make the world chaotic.
However, he got some news about the downfall of the Watson corporation overnight and decide to sell his share in the company to save his capital.
Jack really does not want to gamble with his wealth when he knows the feeling of poor people. At least, his sister is having a weak heart and mind. He keeps manipulating her to fight with her own son.
Sometimes Jack feels so ashamed to torture his own biological nephew, but he needs the work and bonus for his own agenda. So, he has to close his ear and his eyes to get all the best for himself.