I've been to a nice sit-down restaurant (DJ's in Roanoke, VA) that gave you sharp knives, but for the most part, no. First, they buy REALLY cheap knives. Second, there is a massive liability risk in having sharp knives because patrons might sue you if they cut themselves, and the restaurant isn't going to want to risk losing someone, or paying someone specifically qualified, to having to sharpen the knives. Cheap, dull serrated knives meant to tear the steak apart seem to be the order of the day at most restaurants I've been to.