Ultimately, an economy is all about the side effects you describe (goods and services for the population). The fact that, while producing these side effects, the machine also leads to massive wealth accumulation among a small number of people is another side effect that basically has nothing to do with the core tasks of the economy. The question now is how to evaluate this additional side effect. If it does not have any negative consequences, it can be ignored. If it does, it should be counteracted.
It's like in a combustion engine. Oil has to be added for the engine to work. But over time, dirt particles, metal abrasion, soot, and combustion residues accumulate in the oil, overwhelming the oil filter and reducing its lubricating ability. If you don't reset it to a “healthy” basic state at regular intervals, it gets so bad that it prevents the engine from operating and ultimately even destroys it.
Does the massive wealth inequality we see today cause problems that lead to the erosion of society itself? I would say yes, definitely. Of course, it is frustrating for these people when the money they have generated is taken away from them. But let's look at it realistically: if someone has $100 billion and $99 billion is taken away from them, they are still in a situation where they lack nothing financially.
At some point, you've played capitalism through to the final level. And then you should put down the controller and go outside to listen to the birds chirping instead of frantically chasing after the growth of a number that, due to its sheer size, no longer has any concrete meaning, apart from the fact that there may be two other people whose numbers are bigger or who are hot on your heels.
> Does the massive wealth inequality we see today cause problems that lead to the erosion of society itself? I would say yes, definitely.
On a side note. Yes, the massive wealth inequality is eroding society. But billionaires aren't the source of this problem. They are outliers, freaks if you so will.
The real problem is the massive wealth inequality is the gigantic prices of real estate and rent, created by the monetary system being based on real estate instead of productivity. That means it is very hard for a person to claw and scratch her way to equality if they're not born with real estate or gets that benefit at an early age. For most, their irredeemable mistake in life was choosing to be born in the wrong decade.
At the same time a huge percentage of the population who has never made any effort in life and generally have no talent or any admirable qualities, get great wealth and comfort by having been born at the right time.
For every billionaire there is a a hundred thousand of the kind of person described above. Most of us have them not far away, and they have a hundred fold bigger impact on our lives than any billionaire. And at least many billionaires have at least accomplished or done - something - in their life.
> At some point, you've played capitalism through to the final level. And then you should put down the controller and go outside to listen to the birds chirping instead of frantically chasing after the growth of a number that, due to its sheer size, no longer has any concrete meaning, apart from the fact that there may be two other people whose numbers are bigger or who are hot on your heels.
Wouldn't building a rocket to go to Mars for example be such an endeavour, which is bigger than chasing the imaginary dollar number? Or the philanthropic endeavours of other famous billionaires? Or even exacting political influence in the shadows, which is probably something all known and unknown billionaires do?