That's only true in situations where relative wealth doesn't determine standard of living. For example, if someone is able to outbid me and buy up more than the

That's only true in situations where relative wealth doesn't determine standard of living. For example, if someone is able to outbid me and buy up more than their fair share of the finite housing supply leaving me without a home, if a wealthy people can afford better schooling and therefore can outcompete me for desirable jobs, or if a wealthy person gets a greater say in government due to being able to donate to politicians.