As punishment for his offense, John was declared excommunicado and the contract on his head was doubled to $14 million by The High Table, leading the events of John Wick: Chapter 3 – Parabellum to unfold.
All this ultimately culminated in John shooting Santino in the head on Continental grounds, which is a big no-no in the assassin community.
Despite John Wick begrudgingly agreeing to carry out Santino D’Antonio’s request, the crime lord nonetheless betrayed the assassin by attempting to have the assassin killed after the mission was over tie up loose ends.