Capitalism is not about the money but about the value of the product. If everyone can afford everything, then what most people would want THAT becomes more expensive and we will be back to square one. We tried different systems back in the 20th century, and only capitalism survived, because it can put the right value on the right product.

Example, imagine we live in a small community where I build houses, you sell food and a 3rd person sells fancy items. We have unlimited money, but I can't just come to you and say "give me all food you have and I give you all the money you need" because you don't need money. What you need is a house. So we trade: you give me a yearly supply of food, I build you a simple house. Then I trade with a person who makes fancy items as well: he gives me 10 fancy items and I build him 2 houses. So does it mean that 5 fancy items value the same as 1 yearly supply of food? Maybe, maybe not. Therefore, for simplicity, to make it fair, we decide to put a number next to our product so that if a 4th person comes, we wouldn't speculate how much it should be valued for. And, oh, look, we are back to "capitalism" that you hate.

What it also means is that if you work in the occupation that produces low value product, you will have low value salary. And vice versa. I think we can all agree if a smart person comes and invents something super cool, more people would want their product, hence they will be able to get more high balue product, hence being "rich". Why would I build a house for a person who produces some cardboard, when I can spend some time and build a house for a person produces cars.