Here is the simple analogy
Price of the Food shop = Price of all the apples + Price of all the oranges + Price of all the equipment - Amount of Debt in the books.
Is the bid price the opposite?
*Ask the right question you will get the answer!
The typical no arbitrage argument for carry (price change) comes from a bid perspective. I am selling you a forward (delivery of underlying) for some price $F$ in $\tau$ future term. I can go into the market and buy the underlying for $S$. To do that I need to borrow $S$.
Now there are two ways to go about borrowing and I am not sure which one happens in ...