Death, Taxes and Curly Fries

After a visit to Arby's this weekend, I am left pondering the joys of the curly fry. Why is it that curly fries are always seasoned exactly the same? No matter the restaurant, city or state (I've never gone international) if you order curly fries, they will come with the same, spicy, salty, heavenly seasoning. And don't get me wrong, I'm definitely not complaining - I love me some curly fries! But this phenomenon is not the same for regular fries - they vary quite a lot depending on venue. So why is it that once potatoes are cut into tight little spirals they become limited to only one specific preparation? I guess its just another one of the constants in life.