I remember tons of rumors about the staff being overworked too. Lotta Onces shade the staff but frankly, i dont think it's their fault, they're probably having to do twice as much per person as their counterparts in YGE and SM. I think JYP cuts corners everywhere so he can make more profit and funnel that shit to his cult.
But the biggest elephant in the room is what these huge margins mean for the idols, specifically Twice. Is JYP stealing from them as well? Is he not giving them a fair salary or share of the profits that they generate? If Onces find out that he's been grossly underpaying them to help generate these kinds of profit margins....
Exactly JYPE saves a lot of money by being understaffed and bringing in 3rd party contractors during comebacks. If memory serves JYPE has the least amount of employees in the Big3+Hybe and the lowest staff score on Korean job rating sites.