Honest question: Is this really a free loan, or is it the cost of the load hidden (i.e. the interest charges are not broken out explicitly)?
For example, if a supplier has shipped goods with a wholesale prices of USD 100 to a retailer with a net 30 day payment term, I would assume that the USD 100 includes all of the costs associated with that USD 100, including the costs of "financing" that USD 100 for 30 days.
Edit: I've known many people who started freelancing and who forgot to include all of their costs when calculating their rates, especially costs for things like repayment terms. This seems like a very easily overlooked problem for most new businesses.
You don’t think being ordered a very large amount of a product then being told months later that actually that was a mistake and you now have to take back the products while not having been paid at any point during the process and having them try to charge you for the costs of storing it and shipping it back to you sounds like a swindle?
As a supplier, payment delay is basically a cost you have to bear to deal with large distributors. It’s a trade off between somewhat predictable volumes and cash flow availability.
I would never do a one off with a large distributor however. You are going to get swindled as this article nicely illustrates. Large distributors buyers have years of training exploiting people in your situation.