They have 4 days to lodge an appeal which they have already done. Yes the Championship can be taken away still so nothing is final as yet. The Court of Arbitration for Sports is the final deciding factor for Mercedes which if it goes this far will not be good for the FIA or Verstappen and Red Bull. When something is so blatantly wrong this needs to be sorted out. The FIA have breached their own regulations and could lose teams now because of this. What is stopping them from screwing someone else over next year so this is what is of more concern to all teams. There is no way the FIA are walking off with this decision as it stands as Mercedes will fight on principle.