Yes, exactly. My explanation -- it's a supply problem -- is indeed straightforward and obvious (and therefore there's no need to be in search of grand theories

Yes, exactly. My explanation -- it's a supply problem -- is indeed straightforward and obvious (and therefore there's no need to be in search of grand theories about Income and Wealth Concentration). If you see people lining up around the block for something and your priors lead you to conclude that there is no supply problem, then your priors are wrong, almost by definition.