Not getting into a discussion of communism, socialism and how far 20th century communist regimes were the fulfilment of something "essential" in Marx and the others - just a disclaimer: I have never counted myself as a communist or anything "that far left", far from it - but I do think the maxim "From each according to his ability; to each according to his needs" is a good yardstick and at least useful as a way to bring on critical discussion of work, livelihood and money. And let me add I think we need to find other exchange instruments than money. It's insane how many people are stuck with a relative overflow of time but few real possibilities to pitch forward and make something of it, or even to run their lives in a decently speedy, smooth way - because they lack ready cash to make the investments in housing, higher education or web access/computers/electronic media/phones/tv/software, and so on - they basically don't get on the ladder even though they know where the ladder is, because getting on the bottom rungs demands a much steeper personal input of cash now than it did a generation ago.
I don't think anyone can deny that houses, living spaces have become much more expensive in most places in the last thirty years. Where I live you basically just get trash as long as you rent a flat by ordinary contract in a larger city , plus you may have to wait for quite some time, unless you personally know a wealthy landlord and can get an offer on the goodies. Everything that's being built or renovated - or that's readily available, for young people and young families - ends up as condos, which means you need the equivalent of 150-400.000 bucks to get in; in effect people are renting their residences from the bank (by loans on the purchasing sum) as well as from the joint ownership association. If the interest rates go up, everyone who don't have a lot of assets in the bank are in a weak spot. Insane, really, but building new apartment houses for immediate rental is not considered profitable enough. Or again, we invest a huge amount more money, as consumers, into electronic communications, subscriptions and ditto media these days than anyone would have thought possible twenty-five years ago, and a lot of that is basically required to keep the ordinary life going, because the old analog systems have been taken down and things are constantly getting upgraded. You steal, borrow, inherit or work up the money or you just don't fit into the structure.
In an age when many people are out of work and when many are sitting on abilities and half-realized assets they can't find the space or structure to sell for regular, decent money that would be enough to live on - being good at something isn't the same as being good at selling your stuff or convincing other people that they should buy it, or should support your line: get it? - I think we need to find other ways to release those abilities. If we don't, society as such will erode and then it doesn't matter if some people have billions in the bank.