While due process can occur after the fact, in order for a process to be 'due', it would have to (a) happen soon after the fact - but the website takedown isn't ensured to be so, any actions would simply stop after the takedown is done; and (b) include a way for compensating the innocent that are unduly punished - the given example has no practical way to redeem losses of the website if they are found to be innocent.