P1 took fairly immediate action after P2's report.
Interesting discussion; especially after reading the full report by the investigation team It could be argued the PIC could have immediately rejected the takeoff run when the co-pilot warned of something on the runway and speed was 96 knots ground speed;
even if the captain could not discern what was ahead. If he had done so, a collision may or may not, have been avoided. Even a low speed impact would have been safer than what happened next at high speed.
Instead the PIC elected to press on hoping to miss the other aircraft until a collision was unavoidable and only aborted when beyond V1. Certainly the decision to abort after impact was fortuitous since severe airframe damage made further flight highly dangerous. The report stated the collision was inevitable. But that was only when the captain made the decision to keep going and tried to steer off the centreline. All this discussion is being wise after the event but certainly food for thought in future