Global societies were still mostly agrarian in his time. His analysis doesn't work well for the modern era with <5% engaged in farming. Central planning won't work. You need distributed decision making to be flexible for changing circumstances. You need capital for industrialization and you need a cadre of people who can take risks to invest surplus capital into new ventures. The large disparity in wealth is a problem, but some is necessary.

Maybe others see it differently than I do, but the actual spending isn't so much the issue. It's the fact that these people with so much money exist at all. That much money translates to a tremendous amount of power which allows them to bend the law to their will.