If you’re invested in AI companies and broad index funds I feel like you’ll be fairly immune to a parallel economy developing that you can’t invest in. Barring things like AI takeover, AI-assisted human takeover, and the end of property rights (out of scope here as “higher-order social and economic risks”), there will probably still be economies of scale that incentivize large firms, and they’ll still need capital, so you can invest in them.
If you’re invested in AI companies and broad index funds I feel like you’ll be fairly immune to a parallel economy developing that you can’t invest in. Barring things like AI takeover, AI-assisted human takeover, and the end of property rights (out of scope here as “higher-order social and economic risks”), there will probably still be economies of scale that incentivize large firms, and they’ll still need capital, so you can invest in them.