Airplanes are built to be as light as they can be, but a 767-200 fully loaded at impact would still weigh 157.5 tons. Buildings are strong enough to withstand a collision with such an airplane---but not to withstand the buckling resulting from the fuel burn diminishing the strength of the steel by factors greater than the structural margin. And when there is any collapse, the downward momentum and shock force of the upper stories would cause each successive layer of columns to buckle immediately. So, yes, it would collapse that completely and into its own footprint. There is no force acting to push it outside of its footprint.

Are you an aeronautical engineer? Are you a structures engineer? Don't make summary conclusions when you don't know what you are talking about.