here i like more the idea of distribution centers based on transport costs. i reckon transport costs would be a hell to manage so if we leave it in infrastruture level that would pretty much do it. and the the other important point, merchant fleet. i'd implement this with a new industry.
many industry buildings may lead to endemic lack of workers. easy solution. the industries doesn't need to employ just people but capital as well. this may work also to help problems of supply as King told us in this DD. And it could simulate foreign investments that were/is so important for capitalism in developping countries.
It would be great. Though I see a problem with transport and a WM: you don't know where your goods or resources are coming from, in special with goods like coffee, for example, wich is mainly produced, let's say both in South America and Africa. Or grain, produced almost everywhere.
That's why I think we could simulate it in a more abstracted way, by trade efficiency, a factor affecting prices both of imports and exports (thus, reducing profit of selling your surplus, even making more likely others to satisfy world demand and you being incapable of selling it, bringing unemployment to you). A trade industry seem great for me (though I'd prefer to have it like 'services', but... it's negotiable ).
Other thing should be your internal market: not investing in infrastructure, and a 'commercial net' would have a cost in, maybe reducing production efficiency (as you won't get all your production reaching markets), which would affect either incomes of POPs in undeveloped regions (reducing it). In other words: investing in a commercial net is better for your production and making people money matters more.
What I find definetely tricky is not the one and only world market, but a 'perfect' world market: same price everywhere, and so on. Please, let us we keynesians have our market imperfections :rofl: