> Index funds are largely held by passive investors such as pension funds.
Pension operators are not typically passive. It's a different story to say that maybe they should be given that their returns don't always match up with index funds.
They still hold a fairly large amount of money in index funds "about 19.2 percent for public pension plans and 11.2 percent for corporate plans" [0 (2015)] That's a significant sum of money that will be forced into purchasing SpaceX well before it normally would be.
[0] https://www.nytimes.com/2015/03/04/business/pension-funds-tr...