Why charge $$ for hunting hogs? Because they can.
The market is set by those who will pay. When folks stop paying, the price falls.
I know of a day hunt operation that charges $150. They relocate hogs for killing. Two hunters have died there in recent years exiting blinds. Poor blind design or poor gun handling? The $$ now will have to be used for the landowners defense. (TbG may have heard of the operation)
Having folks on my property is nothing but work for me. Why shouldn't I get paid?
Neighboring ranch leases to out of state deer hunters. Nothing but work. He needs the $$.
I'll take the hogs over leasing the property, liability insurance, etc.