Pure conjecture: steak knives are sharpened knives. It is easy to grind an edge that terminates in a point than a flat. Compare the detail of the blade near the

Pure conjecture: steak knives are sharpened knives. It is easy to grind an edge that terminates in a point than a flat. Compare the detail of the blade near the handle to the point, the point is much more precise. I think it also helps symbolically since kitchen knives are sharp and have points. You won't mistake the steak knife for a butter knife.