It's even worse: as an individual, I would be incited to create a company, even one with no business model at all, that doesn't produce anything, because I would then be part of the total market and, as such, receive my share of money from investors all around the world. My non-producing company would be worth as much as Apple.
But remember we're talking in the void, since that cannot happen. Proof: if everybody on earth was indexing, *I* would stop indexing and become a stock picker.