Donald J Trump is a “never give up, never surrender” Churchill-type and Gen Patton-type, and always has been. He will never drop out. It’s just not in his nature.
But his wife may have had enough. If she gives him an ultimatum, what will he do. Stay with her or keep a job where most of the upper level beerocrats hate him. Wouldn’t blame him if he chose her. Not one bit.
Donald Trump is General Patton reincarnated. Check the resemblance and the nature of his personality. Patton had a deep belief that he had lived other lives. Personally, I believe in one life, one death. I guess we’ll all find out in the hereafter.