There are economies of scale in businesses. Some of them are technical. States should not try to insist that Mom and Pop should be able to bootstrap competitors to GM out of savings from their second job. But technical economies of scale peter out at scales much smaller than megafirms. Tesla, which (in physical, rather than casino-financial terms) is not so big, can compete with GM. Technical economies of scale require the scale of a factory, producing in quantities that fully amortize fixed ...
