As long as it didn't affect his own interests, he was always willing to help others.
"Your Marshal is of impeccable character, truly a paragon of our Human Race...
The surplus batch of Maturity Potions, our Department of Finance will take them all, and the deposit will be sent over tomorrow.
As for the subsequent payments, once the potions are sold, we will send the money immediately."
His words started off very proper, but then the situation seemed to change — the Department of Finance actually couldn't pay in full.
It wasn't that Hudson lacked generosity, but rather that many things couldn't set a precedent. If the Department of Finance began running up debts, what would his friends and acquaintances do if they followed suit?
During times of war, everyone is short of money. Even those who aren't immediately short want to keep some extra cash at hand for unexpected needs.