The accident could have been prevented or minimized by requiring commercial air nailers to use the same interlocks required on homeowner versions. With the commercial gun, you hold the trigger down, bounce it against the surface and it nails every time. The more restrictive ones require both a bump and a trigger pull for each nail. Industry would fight the change tooth and nail because it would slow production.
Note: I'm not saying if its good or bad, only that it would have changed this accident.