I‘m very happy that you bring this up. It’s great to have questions to answer and think in many directions, often new ones.
I think this has been done before there were billionaires, both companies and people. Its called cooperation. The not vertically and horizontally integrated version of the companies we have today. A giant containership is a marvelous invention but you dont have to own 10 of these imo. You can rent them, you can have subcontractors that run their own ship and so on. Or am I missing something?
This is obviously just how I see it. Feel free to post this in the community as well to have many people look at it and discuss. Maybe we find solutions and maybe we need to correct our course on some things.