Of course, with redistribution, that actually becomes the case...Redistribution is a necessary evil, though. It's zero-sum* in the immediate term, but it's a necessary upkeep measure for the long-term health of society.
Money is essentially a device for allocating resources to those who have put them to good/profitable use in the past. The problem with it is that there are so many degeneracies, such as crime and dumb luck, that also influence the flow of money. Foremost among these degeneracies is the way money is filtered through large corporations. Large companies profit or fail on account of reasonable market forces, but then go ahead and distribute the money in a manner that has 100 times more to do with office politics than actual productivity. Inheritances are also an enormous corrupting influence, in that they bequeath large amounts of capital to individuals who are entirely unworthy of the influence that it provides.
I tend to think of money and capitalism as shoddy (but the best we have) AI algorithms that need to be continuously tweaked in order to avoid divergence. If you start from an initial state where everyone is roughly equal, and allow capital to flow via a money economy, you'll have a system where more productive people have more control of the resources, and progressive improvements will result. Eventually, though, the degeneracies take over, and it starts to erode society; an elite selected not on merit emerges, and uses its influence to restructure society in its favor further, much in the way a cancer starves a body.
(* edit: I'd actually even argue against redistribution being "zero-sum" in any meaningful sense. From a utilitarian perspective, it's arguably positive-sum so long as we accept that the utility curve of material wealth is concave.)