Pace, why do you think high intensity strobe lighting would have saved the day? Firstly he was in cloud, secondly he did not hit either the top of the building nor the top end of the crane jib (the 2 places where a strobe might have been located) - he hit the jib about a 1/4 of the way up.
Staying clear of cloud and in sight of the surface would have prevented this sad accident, littering the tops of obstacles with lights would not.