[Musk: My wealth depends on actual output, not speculation] Elon Musk responded to a post, stating that almost all of his 'wealth' comes from Tesla and SpaceX stock, which only appreciates in value when the companies produce and deliver more products. He emphasized that his wealth growth is based on creating tangible value for the public, contrasting this with politicians like Bernie Sanders who 'only take.' He added that all Tesla and SpaceX shareholders (including employees) can share in the rewards brought by stock price increases.