Physically remove all IRS agents would be the preferred method; realistically though, not taxing people because they died would solve this particular issue. For corporate farms in general: the government enabled them in becoming monopolies; the government can go after them directly and "break them up," or they can strip away the regulatory measures that insulate these corporations from the free market while removing entrance barriers that prevent free market competition.

Neither of these will happen, because the advantage to centralized monopolies is that the government is better able to influence the market this way