No, there is only one source of all wealth, individual human intelligence.
Only a coercive economic system, not a voluntary one.
No, I don't like people initiating force against peaceful people to steal their property in the name of a false altruism. When in reality the goal is self enrichment at the expense of others.
The reason you feel the need to minimize the moral argument I'm making, is because it gets to the very heart of all the supposedly "moral" arguments of those who support forced wealth redistribution. If the billionaire is somehow "immoral" or "greedy" for keeping the wealth that he/she accumulated over their lifetime (by invention, sales, production, service, inheritance, gifting, speculating, hedging, and whatever other ways a wealth is accumulated, keep in mind an individual human intelligence was required to be the source of any of the forms of accumulation listed or could be listed), what makes the socialist redistributors and all they pay off with others money, any less greedy when they decide to take and receive the wealth of others?
The answer you wish to avoid is: The socialist redistributor is not only just as greedy as the billionaire, the socialist redistributor is actually MORE GREEDY than the billionaire. The redistributor desires what he/she did not earn and very very likely could not earn themselves. They think stealing the wealth of another will somehow make them equal to the ones who created it.