Since there is enough food, water, and energy for everybody in the world, the problem obviously isn't in the lack of the supplies (at least not in the current moment, and when there will be - the technology will be able to help) but in the wrong distribution, which is powered by money. Hence the creation and distribution of money must be regulated in a different way.
Currently, the money in most of the world is created solely through banking multiplication. This creates both debt and inflation (hence the counter-argument of those speaking against the primary emission (money created by governments) that the primary emission leads to inflation and hence cannot be used is obsolete). The system of creation of cryptocurrency coins/tokens is a nice example of a working alternative to primary emission. It is quite revolutionary, if you ask me.
Banking multiplication works in such way that if you deposit, say 1000 USD in the bank, they take say 600 USD (depending on the mandatory reserve which differs from country to country) and lone the same 600 USD to 10 other people. New money is created, and for each of those, the bank will receive back, not 600x10, but 600 + interest rate x 10. The interest rate is a legal profit for the banks. Since the mandatory reserves are (in this case) covering only 40%, this is the reason why a bank run (everybody demanding their deposit back at the same time) can destroy any bank in a short period of time.
However, if the only money, or the most of the money, in the system is created through this kind of loaning business, then you can never create a new free money that will cover the newly created value in the world (new production, know-how etc., all those need to be "covered" by money in the non-barter system, otherwise the only means to exchange them would be - barter, a direct trade - good/service for a good/service). Hence, you need to make new banking multiplications and create new debt and new inflation.
Furthermore, we have a problem with social and economic systems and the distribution of the money. We either have a fully centralized economy where the Governments are only or mostly working for the benefit of themselves or you have free economies which tend to segregate rich and poor again (the natural law: the survival of the fittest (never mind if the fittest are the most honest or not)). We can debate whether the latter is good/natural, or not, but let's say for the sake of the purpose that it's not. Hence we need a system that is enforcing free economy (it is simply not in the human nature to stay on top with the clear head, hence the "good despot" is only a myth, and the minor examples in which it would work, or had worked, are simply not enough to maintain sustainability) but with just a little bit of correctional interventionism (something similar to what the economy theoretical Keynes proposed). The problem of a poor interventionism made by poor governments can be solved by a kind of AI or in-built interventionism in which a cryptocurrency with a system of smart contracts could be "just what the good doctor prescribed".
I agree with the most part of your post. In fact I had expressed very similar views in my earlier post in this thread, in short, that the problem is not in the lack of wealth but in the unequal distribution of it. I even feel that you are trying to say something interesting and valuable in your last sentence, but I just can't get it. Can you please elaborate it little more?