I disagree with you that an employee is a CEO in the company that he is working. If you're employed to work with a company or someone in order for you to be paid, you are not self employed because you depend on working for someone to get paid. They can choose to pay you or fire you. When you're self employed, you are your own boss. You make your decisions and don't report to anyone or depend on anyone to give the final say.
I support your opinion on this matter. One can not be self employed when is totally under the supervision and commands of another person. Being self employed means you have to be the entrepreneur of the business, service or what ever thing your doing. Your the only person bearing the risk and enjoy the benefits, but in a situation where by your being employed or hired by a proprietor or film you no long bear the risk and benefits alone, your automatically not the entrepreneur so can not be seen as a self employed.