They've been taking about putting Trump in jail after he's out of office for awhile. At least before he could be ok with leaving the presidency because he could just go back to his old life but it seems they want revenge on him for shaking up their establishment so he can't.
It seems like from a self benefit perspective, just accepting defeat will gain him nothing. If he just takes it they jail him. If not they jail him, but at least there's the slim chance of him winning. It basically only benefits him to burn down the house.
So don't be surprised when he tries to deploy the military or rally his supporters in DC or does something equally drastic. The swamp is out to get him and they've left him no viable choice but to fight back aggressively.
Brace yourself for a wild month.