There’s your problem right there. This helpful video gives graphic representations of what most people think the distribution of wealth ought to be, ideally, in the country; what most people think the distribution of wealth actually is; and the actual reality of our distribution of wealth:
Our economic machine is diverting a lot of resources to a subset of people who aren’t generating commensurate value from their work or ingenuity. This is happening because they are able to leverage their position in the economy to appropriate value being generated by others. That’s wasteful and inefficient.
This is not advocacy for just giving everybody the same amount of stuff. It doesn’t even have to be precise – if the wealthy get within shouting distance of taking in something close to the value they create, we’ll be good. But, it defies belief to think that the wealthiest 1% are generating 40% of the economic activity in this country.