I did a search and it turned up blank on this except under fiction.
Are there any plans on implementing, for example, investing some wealth in the shipping lines that start up or even invest in NPR shipping lines that you are allied with? Also the civilian mining installations might get to be their own company that you can buy stocks in.
There are several more expanding ideas that can be used with stock market.
Sorry about my English.
I'm not sure if I understood you correctly but you want to be able to invest, as a nation state, into a corporation. Not only that, but you want Civilian mining installations to become their own company. Is this correct?
While I'm all for the idea of having more complex companies and shipping lines, nation states usually do not "invest" in a business to see a return. They subsidize (which we can already do), loan, bail out, tax exempt, fine, tariff and sometimes 'Crown' (take public control of; I'm Canadian), but I don't think they invest in a business sense. They usually just tax them to get money (which we do in game).
I do however like the idea of civilian mining operations being run by a company, business or shipping line though.