Solar power has begun to transform the world’s energy system

I think you have misunderstood energy yield expressed as a multiple of energy input as a fundamental measurement of the viability of any energy technology.

If you run scenarios, you’ll find that this number is entirely irrelevant. Instead, try considering the availability and required quantities of raw materials and inputs like silver, indium, land, and of course money which is the best proxy for measuring how much of the world economy would be required for building out any technology.