There is no Feudal Structure in Belgium. Belgium is composed of 2 or 3 ("republics") which in turn make up the federation; much like the USA is comprised of fairly autonomous S-thingies, you know Utah, Wisconsin and the like. The monarchy is merely a decorative thing: a bit like if we are going to throw money away via a President who is bound to make a "favour" or two, why not do it legally ... and simply pay the clan an over-the-top salary and expense-claims?