I think the extremes of anything is off balance and ultimately unhealthy. Being too poor is not good for anyone, the person or community. Poverty also is a cause of population expansion, environmental degradation, disease, etc... so it's also bad for the entire planet. More advanced countries tend to have populations that stabilize over time, maybe even decrease. If we're going to preserve life as we know it on Earth, we need to eliminate poverty and stop expanding the population.
There are also issues with having too much, and this also is not really good for anyone either. An example might be the Davos summit where 1500 private jets flew in to discuss how to solve the world's problems. It's pretty plain to recognize the irony here, beginning with the existence of private jets and how many resources they consume, which is out of proportion in a massive way vs what others consume to the point of ridiculousness. I think it's just as ridiculous as some not being able to afford a pair of tennis shoes, it's the flip side of the same coin.
I don't think that my belief that both of these things are undesirable is unqualified and that nobody has the right to judge. You can objectively look at these issues without so much emotion and determine if they benefit the world or not. Historically, the concentration of wealth has lead to undesirable results when it becomes too extreme, like it is now. So yes, I think we CAN make the judgement that wealth inequality is actually a real problem that is causing harm, and in a logical, fact-base debate this is likely an extremely easy position to defend... up to a point. Communism is the other extreme and that doesn't work either for obvious reasons, and would be similarly indefensible. So maybe there is a kind of "middle road" here that is the healthiest way and would be ultimately best for society as a whole? I think there is and the topic is valid and should be discussed!
When it comes to audio in particular, the pros of wealth are the ability to push the boundaries of what's possible, and this is a huge plus imo. However, if you read my post on page 1 you'll find that in many ways the market dynamics have changed from pushing what's possible by manufacturers in a honest way to raising prices for the sake of having more "impressive" price tags, and making products simply to have something more expensive to sell. How is this desirable? The market is being pushed in an unhealthy direction in some ways due to this dynamic, this is not pushing the boundaries of what's possible in a honest, healthy way imo.