"Control structure optimization"? You start with the dubious assumption that since [partial] ownership increases a party's interest, and thus work performance (a doubly dubious notion: Surgeons do not do surgeries on their family members, actors get stage fright during performances (in which they're fully invested), not rehearsals (in which they're not), etc., etc.). As i pointed out earlier, incentivising work (oh, let's say a salary) improves performance, but the law of diminishing returns kicks in early, and, as i've pointed out, .1% of Google would be enough to keep me *riveted* -- at 50% my ego might get the better of me & i'd start treating the company as a toy (i wouldn't be able to spend that much money in my lifetime anyhow, so why not?)
There will always be examples of people doing crazy things just because they're people -- that's human nature. But rationally, there is no limit to the usable amounts of assets. You can pass them on to children, or use them to secure your future against increasingly unlikely problems.
It's hard to tell how to better organize things. Owning 0.1% of Google when it was a start-up wouldn't have motivated people much. The prospect of randomly losing one's share has the same effect. We don't know if full private ownership is the optimal solution, but it is a solution better than other plans people come up with. As for people wasting the funds or going nuts: remember they can do this exactly once, then other investors take over. The market systematically removes such actors and the problem with them.
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It might fail at times but this is part of the competition -- and thus evolution -- amongst investors. If they have others conduct their business their job becomes ensuring the productivity of these executives. If they close one company to strengthen another in excess of the loss, this is still a net benefit.
Net benefit? To whom?
To the total of any type of party involved... I don't get the question.
If the total efficiency of the result is higher, society gets a net benefit. Since it's capitalist by assumption, the resulting company produces something people want. If the market pays more profit margin for the new company configuration, it seems that either many people or other companies find it more useful.You realize that outside of Ayn Rand books, the poor protecting the rights of the rich to get richer are just dupes to be laughed at, right?
Quoting this too, because it is the core point I don't believe. IMO the correct statement would be "The poor who protect the rights of the corrupt and fight the productive rich are digging their own grave".
In being driven by jealousy instead of rational thinking, people think in categories of "rich" and "poor" instead of "productive" and "counterproductive". This clouds their judgement and produces major inefficiencies.