> Where would you find sufficient investable assets?
The land itself, all of the resources in and on it, the industries that operate within the borders, etc.
We don't necessarily need to set aside 200k per capita, but it would be wise to not be at -70k per capita and growing fast, in my opinion.
> A sovereign wealth fund similar to Norway in the US would contain a large fraction of all wealth globally.
If the rest of the world operated on similar principles we would inevitably reach a balance. Regardless, the US would have to clear an enormous sum of debt before we could realistically start filling up the piggy bank.
Scarcity of investable assets is already a problem. Increasing demand by $50-100T will make it worse. Part of the reason the US issues trillions in debt is to absorb some of the existing demand.