At present, we don’t even have the technical means to have enough storage to afford 100% wind + solar in a country,

I reject your premise.

I agree that we do not have the storage capacity to maintain the supply-shaping model we currently use.

However, we do have all the technological tools necessary to shift to demand-shaping as our primary model for matching supply and demand. Basically, we can move the times that we use most of our power to the times that power is easy to generate.