Bitcoin Magazine analysis suggests that a potential merger between Tesla and SpaceX could become a "passive flow hack," potentially increasing the S&P 500's Bitcoin exposure. Sean Hagan analyzed that the merged company would gain a higher index weighting and capture more passive capital flows, similar to the logic behind MicroStrategy's inclusion in the MSCI and S&P 500 indices. This move could provide an alternative path for SpaceX to enter the S&P 500 and indirectly increase the index's investment in companies holding Bitcoin.