This is just another example of why Rand would be a terrible and a terribly ineffective President if he ever became one. He doesn’t believe in allies, which is fine in principle if all you’re interested in doing is trying to make a point. It’s not fine if you want to actually get things done. Those who want Trump to pick Rand is VP should consider that (along with the fact that a guy who’s unwilling to endorse you this late in the game is a lousy choice for VP).
VPs are not supposed to be “effective”, they are supposed to deter coups. The current VP is excellent at detering coups. Nobody, on any side, wants to turn the Presidency over to her. Even the Grim Reaper himself winces at the very thought of collecting the over ripe FJB.