If Suzuki fitted the hand guards standard the marketing people would say that there was more perceived value in the bike and put the price up another $100.
Take ABS for example. The difference in price with and without ABS in the USA is around $500 I believe. It costs car manufacturers around $25 in extra components to put ABS into a car and I suspect that the actual manufacturing cost for a bike will not be substantially more, lets say $100 but because of the perceived extra value Suzuki can up the price considerably.
I would rather have a bike with less on it then put the things I want rather than pay for stuff that I either do not want or do not need.