Earlier quoted context omitted.
I borrow you 10 money i use to buy my chair-making tools. I make the chair, sell it 20 money, then pay you 12 money back for the service rendered. Basically money is supposed to be a tool that help us creating capital by exchanging goods.
But aren't you confusing the means of exchange with the creation of value. The creation of value is me taking energy from the sun and converting that into a chair. You lending me money is you extracting value from artificially being a middleman. It would have been more efficient to write an IOU to the tool maker, make the chair and pay back the tool maker directly. Now sure that IOU isn't that fungible - however that…
Which requires money to do. If you borrow that money to enable using solar to make furniture, then you can repay that money with interest and keep a profit for yourself. Both the borrower and lender come out with more money than they had when they started.
That's not a zero-sum game.
Now, it's 100% true that borrowing and lending can (and often is) done in a way to make it a zero-sum game, but that's just because the world (including the big-time corporate world, and especially including major IT companies) is full of scammers.