This is a bluff by Musk, and a good one.
Musk is using the same “crazy person” negotiating tactic President Eisenhower used to end the Korean war. “Will I drop an atom bomb on North Korea? I’m not saying. You’ll find out when I’m in office.”
The North Koreans came to the negotiating table the moment Ike was elected. They couldn’t take the risk that he was crazy enough to actually drop the bomb on them.
Apple & Google can’t take the risk that Musk would do this just for fun. The guy just burned $44 billion on Twitter not for profit but because he wanted to do it. He builds rockets as a hobby. He’s willing to burn big bucks on longshots.