Because of products like this one from Miles Kimball:

Motorized Ice Cream Cone

Motorized cone does the work while you have all the fun — rotating automatically as you lick! Sturdy plastic cone lets you enjoy leisurely licking without drips or leaks. Uses 2 AA batteries (not included). Assorted colors; we’ll choose for you. 5″ high x 1 3/4″ diameter.

Who is so deplorably lazy that they can’t turn their own ice cream cone while they lick? I love the last line in the description: “Assorted colors; we’ll choose for you.” Yeah, obviously — because if you’re too lazy to turn your own cone, you’re too lazy to pick out a color.