Rubik, most aerofoils are not symmetrical, and therefore produce some lift, even at 0° AoA. This is why speedbrakes are used to disrupt the airflow over the top of the wing and destroy lift. This scenario ensures that maximum weight is on the wheels, allowing the brakes to work as effectively as possible.
Wings are able to produce lift even if they are not producing any contrails at all...
Another way of looking at it is with a GA aircraft, if the pilot does not rotate at all, there will come a speed at which the aircraft will lift off anyway. It's no different for the B777 or any transport category aircraft, except you'd probably find you are off the end of the runway before you can observe this.