You hear people today saying we live in a "global economy." It seems like that statement might be true of people hundreds or even thousands of years ago.
True but what magnitude? On the one hand, I'm always surprised by (say) how many thousands of gallons of beer could be produced by a victorian brewery but equally, we make a hell of a lot more now.
So, it was often possible to scale up production even more, but there where not enough customers to justify it.