The fact that Greece owns 70% of geographical Macedonia does not mean that we have the exclusivity of the name. Apart from Aegean Macedonia who belong to us, there is Macedonia of Vardar and Pirin Macedonia.
Simply geography lessons

The problem with FYROM is that although having just a small part of Macedonia which doesn t cover the whole country, they want to call the whole country with this name. It is just a matter of logic when the part wants to become whole.