Unless i am very much mistaken, the purpose of Capitalism is the use of wealth to create more wealth.
Of course this is most beneficial to the people who have wealth in the first place and a bit more of a struggle if you haven't got the proverbial pot to go in to start with.
The general idea is that the money will trickle down from the top and everyone will benefit, even those at the bottom.
Nice idea in theory but due to human nature which is basically selfish, it would be safe to say this hasn't really been happening and the trickle down has been at the minimum the wealth owners could get away with.
A classic example is the minimum wage here in the United Kingdom which was fought against tooth and nail by the bosses who refused to introduce it voluntarily until forced to by the incoming 1997 Labour Government.
The collapse of industry and wholesale closures that we had been warned would occur if a minimum wage was introduced didn't happen and now it is accepted that bosses can no longer offer insulting wages in the knowledge that they would still fill the vacancy.
What this shows is that we cannot trust businessmen to look out for the best interests of us and they need to be watched. The banks are finally being bought to book after years of treating their customers as cash cows with extortionate fees and the mis-selling of protection plans.
The bottom line is the same as my first line, the purpose is to use their wealth to create more wealth.
At some point there will be a crunch because as more of the money continues to go upwards, there will be less left to go downwards and we are already in a position where people are actually dying because they can't afford to heat their homes in winter and scandalously, we are not rioting in the streets about it, just seem to accept and see where we can trim back to accommodate the hike in our utilities.
Maybe Capitalism has run its course and although it lifted many out of poverty initially, it seems that it now is the cause of more problems than it solves as it chases bigger profits at the expense of those benefiting from Capitalism the least.