Does capitalism require resets?

Free-market-capitalism is fairly straight-forward. The strong shall flourish and the weak perish. Relatively speaking.
So who are the strong? Many things can make you stronger. Education, but more essentially, approved and accepted qualification. Skills of various kinds. Networking.
But what has you really on the strong side is money. Money can get you anything. Most of all - more money.
But oh no who would have thought that - the gap between rich and poor is growing. S-h-o-c-k-i-n-g.
After all, the market is free, so it is fair, so it is just, so everyone can succeed or fail and that means social mobility and that means a just distribution of wealth.
O wait, this is all BS.

A growing gap between the rich and poor seems to be wired directly into what the free capitalistic market is - or not?
So what do we do about it? We can soften the trend, but we don't seem to be able to actually stop it. And while in relative terms the majority has less and the minority more, debt is pilling up and debt creating money demands to be served.

Is this system in dire need of periodic resets? Is it bound to spiral out of control? Am I a dirty communist?