Jonathan_S wrote:Their stock markets would have grown up and evolved in that environment of economic and market isolation; and I don't think the transit times have yet dropped sufficiently to significantly change that situation. Yes that will have changed some; for example I expect that major interstellars are listed on multiple system's exchanges to facilitate the trade of their stock between occupants of each of those systems -- but the linkages between those disparate systems' markets seem like they'd be far more tenuous. And some daughter colonies might be close enough to their parent system that most of their businesses might wish to be traded on said parent's markets (the advantages of access to more capital and liquidity possibly outweighing the disadvantages of having such delayed access to the market where your shares are traded)
And like their economies also would have matured in an era where self-sufficiency was at first required, and even afterwards still quite beneficial. The Core worlds would have had diverse and well established economies centuries before it even became possible to routinely ships goods between the stars -- and being self-sufficient likely resisted losing significant share to foreign imports. (But even a tiny fraction of a Core world's economy is more than large enough to let fortunes be made in interstellar shipping; even while it might remain almost insignificant to the economy as a whole)
While most of the Core Worlds are well developed and should still have a lot of materials available to them in-system for most needs the challenge comes with the whole concept of Interstellar economies and development of trade in goods, materials and knowledge comes into play. Ask yourself why there is so much interstellar trade. Because there is usually somebody or a range of somebody who can build/manufacture things that are of higher quality, have better tech, or can do it at better prices. And then there are things that are considered premium goods (like Montana Beef) or that can't be acquired from usual sources. The shipping is moving goods, people, data/commuincations to places that want or need to acquire it.
At one point you could acquire stock ownership for companies outside the National territory of any of the financial centers of many companies but you were removed by time and distance from where those companies were headquartered and or were generating product or income. Think the Dutch East India Company importing spices, other products from the other side of the world. You could buy and sell shares but unless you physically sent the shares to the company headquarters or the Amsterdam Exchange, you bought or sold as you could where you could do the transaction. in the 21st century Earth financial markets- trading effectively goes on 24/7 because some exchange is always open and you can (if you have access) trade electronically.
Moving money is similar in the Honorvers- a blend of in-system financial transactions via electronic communications and sending Drafts though courier systems (letters of credit, and variations) which will be delivered to pay for or transfer money to your account in system X. You get your funds in-hand the same way. You're working through what are either a Factor system or Correspondent Banking system using primarily electronic orders via a bank or financial house in your system to their contractual partners somewhere else. We have seen credit chips mentioned on Bank of New Madrid. That would be an analog of something like the Rothchild banking house or trading houses in London or Amsterdam (pick a city) who will buy things for you or provide funds for you to do business where they are based on the funds they have and agreements you your own Bank/Banking house. Your "bank" or trading company (think Hudson's Bay Company)helps you buy and sell goods. It's more complicated that that but they allow you to move money around.
What usually gets overlooked is that these merchant banking operations are taking fees for the services and they would (again, think 17th, 18th, 19th century colonial development and you sell your agricultural products to your factor who ships you the stuff -or buys it- and place orders with them for what you need from the home country or elsewhere) England was prohibiting actual money -in those cases hard currency of silver/gold/copper- from being sent to the colonies and required the people there to ship their agricultural products or other things back to England. And they couldn't have a local colonial currency-
Manticore, by virtue of its operation of the Junction, is a focal point for the passage of trade and it is getting paid for transit though the Junction. It also (until Oyster Bay) was a major exporter of a lot of goods even if it was also importing from elsewhere as well. Think about a Manticorian company offering a product that somebody out in Silesia wanted/needed at a price below what was being charged by manufacturing in a Core World -and that might only because the shipping cost to get it from Manticore to destination was both less expensive than shipping from said Core World just in cost of time on the ship but not having to have the share of the junction fee TO and Through Manticore on a SL flagged ship.
The Manticorian Government and the various shipping companies headquartered there are making the most of their advantages and apparently investing wisely to both expand their reach and make more money