set of actions people can take if they believe there is a decent chance AGI will be created in their lifetimes and want to prepare for it but are not willing to spend all the time to develop a detailed personal plan.
I don’t think that’s how markets and finance works. The actions you can take if you’re not willing/able to get into the details of a personal plan are pretty much “follow the crowd”. Perhaps you can pick a crowd to follow, in the form of slightly-less-general indexes.
For example, if you believe the efficient market hypothesis, you can act on that belief by buying low-cost index funds.
No, no, no. Regardless of what you believe, if the EMH is true, you can’t do better than buying low-cost index funds. It’s only the case where you have TRUER beliefs than the market aggregate, in ways that you can predict the market shift that will happen when your belief becomes common, that you can invest better than the average. Without quite a bit of analysis and research, I don’t think you can predict whether Google shareholders benefit or lose from AGI development any better than the market.