How Did Comedy Central Fuck This Up So Badly?

First, they lost Colbert to a network deal, and now they are losing Jon Stewart's known quantity for a zero who will most likely suck dog dick and fail.  They had an effective, money-making hour, pretty much untouchable among the people who were the intended demo, and will be going with zero in place of Stewart and Larry Wilmore, whose show is unwatchable, if pathetically sincere, dreck where Colbert used to be.  How the fuck did this happen?  Didn't anyone at the network have any sort of plan for this eventuality?  Why weren't they ready if and/or when Colbert got a gig?  Had Stewart made any noises like he would leave?  Shouldn't they have had the crown prince ready to go?  Instead they got the scramble and then this.  No Colbert and now no Stewart when they used to have a brand name lineup.  Jesus.  At least the new guy can't be any bigger of fucking tool than Stewart has been, but it still seems weird.  Exceptional American incompetence and its best.