Also Musk will not make much money from SpaceX because like everything he's involved in the margins are terrible (molecules and atoms don't make money).
His net worth has balooned because of his ability to sell an ever improving vision of the future and constantly moving the goalposts, but solving climate change is becoming a crowded trade socially speaking. Politicians and central bankers are coming to the show and they run circles around him with regards to social competence and speaking abilities, so he'd not even get the glory .
Kamala Harris will be remembered in the history books as the 1st female POTUS , the politician who also solved climate change and landed humanity on Mars, while Musk would be left with a very low margin business and no social recognition, and no narrative to propel the stock.