The moment that Jack decided to make a move, that was the moment that the two families suddenly realized that there was a force that was trying to mess with them. And, they couldn't even know who it was.
All of a sudden, the business deals that were supposed to have gone through, suddenly failed. The cooperation that had been going on for a very long time, had suddenly been canceled.
Those people that they had thought of as friends, suddenly kept their distance away from them.
Several projects, business deals and so on suddenly failed. And for that reason, the two families suddenly began to encounter one loss after another.
This had already agitated the family heads of the two families. They began their investigation about the cause of the matter, but no matter how hard they tried, they found nothing.
The response that they always got was that, they had offended someone that they should not have.