All I can say is that, at the new price point, it's very likely I'll end up pulling the trigger on a souvenir glass... which it seems is what Universal wants. Getting to eat the ice cream via my preferred method and receiving a (cheap, yes) souvenir is something that I can justify spending an extra $2+ on. I've got a collection of theme park drinkware, so sure, why not add another piece.
Obviously, I'd still rather they have the simple paper cup option, but I just can't pass up the strawberry and peanut butter if I'm there.