Property is a byproduct of your Time+Energy, property is not an imagination. Just because you think of one thing doesn't mean I am not also fully able to come to the same conclusions for ideas and problems.
Who shall morally enforce thought? Ronpaul.com was rightfully bought and paid for by someone who obviously put time+energy into that webpage. In fact, the person who bought the domain came up with the idea before Ron Paul ever even thought about it so who is to blame?