Listen... start with simple.

Take a look at this example:

Let’s say we have a scenario of a single person living on an isolated island, let’s say his name is John. This person decides to open a firm that will plant coconut trees and collect the harvest. John is the owner of the firm, but he also registers himself as the only employee. He decides to pay himself a monthly salary of 120 dollars.

Now each month John manages to grow and collect 120 coconuts.

Now John’s firm has a monthly expenditure of 120 dollars.

So the firm must set the price at least 1 dollar per coconut in order to break even. With this price John will be able to purchase 120 coconuts. Now let’s say the firm decides to make a monetary profit, and decides to sell coconuts for 2 dollars. Now John can only purchase 60 coconuts… So each month the firm pays John 120 dollars, produces 120 coconuts, sells 60 coconuts to John for same 120 dollars and it still has the remaining 60 coconuts.

So each cycle the firm makes profit in form of 60 coconuts, but it doesn’t make any monetary profit. In fact, no matter what price the firm sets, it can never make a profit in form of money, only in form of excessive coconuts that John wasn’t able to purchase.

So as you see there is no monetary profit possible. The firm can't accumulate money. Coconuts? Yes. But not money.

So you may think that if we keep adding people and firms, some how magically monetary profit will become possible, but no, it's not. And I prove this in my work.