1. A seller rents some storage space from a landlord to store the products he wants to sell 2. He uses a cloud provider to set up his website for customers to s

1. A seller rents some storage space from a landlord to store the products he wants to sell 2. He uses a cloud provider to set up his website for customers to shop 3. He also uses a payment processor to process customers' orders 4. He then uses a shipper to ship them In this case, should the landlord/cloud provider/payment processor/shipper be liable for defective products that the seller sells? There's a plethora of companies that play one or more aforementioned role(s), and it so happens that Amazon assumes all of them.