The Howlers had been non-stop busy after taking over Notsburg. Or more accurately, Kai had been busy working alongside Harry mostly, because in terms of why they were so busy it was due to the investments they were running.
To put it simply, Notsburg was a money maker, an incredibly large money maker, and due to them not having a leader who cared about extravagant yachts, bribing of other gangs, buying super cars, or jewels, they had a lot of money on their hands.
At the same time Kai didn’t want to just waste this money. He didn’t want to spend it on things that wouldn’t give them a good return. Because after all, although their wealth was large, when it got to this point, it was more about power and influence.
Who cared how much money one had, if one of the King’s at any point and time could just come and forcefully take it away from you? At one point, Kai was considering using all the money they could to buy Altered solutions.