Maybe your anologies just don't work, because the situation is completely different? The payment terms spoken about above are not to minimize transaction fees,

Maybe your anologies just don't work, because the situation is completely different? The payment terms spoken about above are not to minimize transaction fees, often enough they are 90 days after the order is completed even for a single order, how does that minimize transaction cost (and how is that comparable to electricity bills?)? I know that in Australia the terms in groceries are horrendous. Generally, frood vege suppliers have to buy specific boxes for delivery (from the supermarket chain) they then still have to pay rent on those boxes and if items don't sell they have to take them back (and pay a box use fee again), make items available at discount for specials run by the supermarket, on top of that the payment terms are as described above. Essentially the big chains don't take any risk, and the small suppliers all the risk. This might be particularly bad because the market is dominated by 2 chains. Supposedly Aldi and Lidl were much better at the time, because they tried to break into the market.