I'll start by saying there is no way we can decide or limit how much an individual can earn or make in a lifetime on a general point of view, their hard work should decide for them. And remember... "Man's wants are insatiable". No matter how much a man would make in this world as wealth, he is going to want more at most, to keep the wealth for as long as he lives.
Right from the beginning, it has been designed that there will be the poor ones and the rich ones on earth. Of course, this solely depend on humans to decide the category to fall into. It's left for the poor ones to desire to be rich, work for it and some will achieve it while the rich ones work even harder to keep their wealth growing with no limit.
I want to believe that the reason to think of this impossible instance where the rich have a limit on their wealth creation, is because of the oppression on the poor ones or game of greed that comes in. I'll say this depends on the individuals involved, some rich people will be greedy for more that is, doing the wrong things to increase their wealth since there is no limit.
But there are also the rich people who have worked really hard and honestly to build a wealth creating business or company for them and even for generations, how can they be limited to a certain amount to earn? it wouldn't only be impossible but if it were even possible, it is definitely going to be unfair.
I don't know about others but seeing the wealthy ones become more wealthy, I feel it is how God designs it and they kinda make the world go round because the truth is, money rules. It may not buy all the most important essentials of life, money still holds so much value for our living and so, setting a limit to create more would not do us good at all.
The poor can become poorer or rich, the rich can become poor or richer, it all goes down to the individuals and their mindset on wealth and the power it holds. We could say if wealth is limited, people will value what they earn a lot more than they do. This is especially for people who spend too freely or earn their money dishonestly.
Life's balance is that some will be rich and some will be poor, some will have to sell those things in the market places and there will be some who will go to buy them for them to have profits. If wealth is limited, some of these people who are to sell will be quick to climb up the ladder doing almost nothing and become rich to go buy from the market too.
On that note, the life's balance will be faulty and I can not tell how badly it will get from there but it's definitely not going to be how it should be.
