All correct. Well, since goods are not replenished save through a Production action, you'll run out soon enough. Keep in mind that the cities on the map are of one colour only, and that you must Urbanise to get the cities of the other colour (with plenty of cubes on it still) on the playing area.
Sorry to resurrect a really old thread, but I'm a little confused: Seeing as all of the starting cities are white, and the additional town tiles are all letters, that means that none of the black letters are ever going to be used, correct? In this case it doesn't seem to make sense to place any goods cubes for the black numbers. I'm not sure whether or not I'm missing something, but if anyone could clarify, I would appreciate it!