[Sleeep]

This is unfair, you're always "building businesses on someone else's platform," as you're always dealing with outsiders.

If your supplier raises prices you can become unprofitable, if your distributor changes policies you can become unprofitable, if FedEx raises prices you can become unprofitable, if price of gas goes up you can become unprofitable, if your rent goes up you can become unprofitable, if taxes go up you can become unprofitable, if laws change you can become unprofitable, even if a local employer closes you can become unprofitable, if a competitor comes in and undercuts you you can become unprofitable, etc.

It's not fair to criticize a small business for not building up, from scratch, the infrastructure and customer base that Amazon has. Especially when many of these small businesses wouldn't even be feasible without Amazon's infrastructure.