The big question now is who replaces him.
Can Vettel or Alonso be bought out? Everyone has a price. Have Ferrari got enough points to pass the buyout clause in Vettel's contract? Can they get Merc customer Williams to release Bottas? Will they have a crack at Sainz? Or go the junior Merc driver in Wehrlein? Or could Button be talked out of retirement as a stop gap?
Will be fascinating to watch how this plays out.
I've been pondering this question - One important factor is Mercedes must find a driver to keep Hamilton happy - They need a driver at around Hamilton's level,because if he breaks his leg they need a driver who can win the championship - My first thought was Bottas but doubt this will happen seeing Massa has retired, which will leave Williams with no experience - Alonso is a chance as its obvious he is unhappy with McClaren - For me the obvious choice is Ricciardo - RBR see Verstappen as a future world champion ( they think the same of Ricciardo ), so losing Ricciardo is no disaster - Think Perez must also be a chance.
My order of preference is