Yep, hogs cost money. They exist and will continue to exist whether we want them to or not. I am not sure where the money issue you are referencing figures into the issue, however.
They may be historically invasive here (indigenous in England and the rest of the Old World, paleontologically indigenous to the New World as well), but invasive or not, they are an industry supplied/refreshed/rejuvenated by some of the very ranching landowners justplainpossum is saying would be offended by hunters who want to keep them. After all, they raise hogs and hogs get loose just like all the rest of the livestock...sooner or later.
"If you look through your scope and see your shoe, aim higher."
-- said to me by my 11 year old daughter before going out for hogs 8/13/2011