It is simply not the responsibility of google to prevent this tragedy. It is firstly the responsibility of every driver to make sure to be able to see where you are driving and be able to stop in time in case of unexpected. What if there was a person in his path and he could not stop in time for example?
And secondly it is the responsibility of the local authority/agency to put up signage and block the road.
Sure, i am not a fan of giant megacorps either, and it makes sense to be angry at google for not correcting the wrong map data. But strictly from a responsibility perspective, i don't think google should be held accountable here.
I also believe the thinking "directed this man to death" is too extreme. It simply is a map, with route information. There is no automatic driving or compulsion to follow its direction, the driver has to make safe decisions by himself imo.