They have to sneak into your business meetings or ask you your purpose of flying. The airlines know their business and they know their customers. They can target business travelers for higher prices without ever having to ask you a thing. Where do you think the advance purchase discounts and the Saturday stayover requirements came from?
Apparently your idea of liberty is to take something you legally own (a CD) and misappropriate it for personal gain, then protest that you're well within your right to do it, notwithstanding what the law says, simply because you feel it's right and we should just trust that you know better than our elected legislators.