Another way to consider it is through the lens of meritocracy. Consider two poker players of equal skill. Have them play each other until one has lost everything. Run this competition over and over, starting each player with a random stack. Over many trials, the player starting with the bigger stack will win in proportion to the ratio of their stack to their opponent's. Given a large enough ratio, this wealth advantage can begin to overcome greater and greater advantages in skill on the part of their opponent.
In the US, the ratio of the wealth of the top 10% to the wealth of the median has risen from 5.8x in 1963 to nearly 10x in 2022. In the same period, the ratio of the top 1% to the median has risen from 35x to 70x. And the effective advantage is probably much higher, as this calculation does not take into account liquidity: most of a median family's wealth is in their family home.