"Since you obviously believe that an income tax is a 'cost' tell me what is it that is costing? What are we paying for with an income tax? What is it that can at times cost NOTHING?"
You are paying for the opportunity to earn an income in a society that is reasonably stable, has a stable currency, a reasonable level of physical security, a legal system that protects against anarchy and chaos, etc., etc.
You are confusing general taxation, business license fees and income taxation. Only Factors of Production have a cost to a business. But you are claiming IT is a tax on external economies, general social conditions, etc. If that were true there would be no reason to be opposed to it since we do live in a stable society with stable money and the protection of law.
On the other hand I see it as more of a tool to redistribute income which is not easily done via the other taxes.
And you are NOT "paying for an opportunity to earn an income" anyway that is a licensing fee or a business permit fee. There is NO tax unless a PROFIT is earned thus the IT has nothing to do with "opportunity."