I totally agree that checks and balances -- in the abstract, some form of all-to-all coordination between the different components of the system -- are probably the easiest way to healthcheck any system like this. Otherwise you fall into "multipolar traps" [1] where each actor, working independently and acting game-theoretically optimally, can throw the system into undesirable states.
Checks and balances should be implemented. But is this adequately true in the actually-existing implementation of the system?
[1] https://slatestarcodex.com/2014/07/30/meditations-on-moloch/
how does the natural ecosystem balance itself? I think that as long as each actor has enough degrees of freedom to exploit any loophole in any other actor, the system will self balance (by which, i mean become stable).
[1] https://press.princeton.edu/titles/8853.html
[2] http://www.wcbbf.org/pdf/balanceofnature/8.pdf
[3] https://journals.sagepub.com/doi/abs/10.1177/096366250506302...
I'd love to hear a good solution for this within a market system.
My understanding is that upper-middle-class fortunes today are attributed more to cultural norms and posh school districts than to trust funds.
Your wealth won't expand forever, because we all die.
Corporations are owned by shareholders, who die and pass their wealth on to the government, family, and various charities.
In the face of poor human judgement it might be one of the more robust resource allocation schemes available to us. But optimality should never be claimed without proof.
As a bonus, it also creates a nice incentive for saving and investing into the future. What is hard to achieve on most systems.