How to Control the Customer Experience in Marketplaces

How do you control the customer experience in places like marketplaces? Because obviously it's someone else's website, especially the lazzards and so on. And how do you actually control the experience? First off, I'd say you don't control it. You influence it, but there's many steps you can do. So if you go to Amazon from any number of countries, you'll be interacting with a Bellroy control range on there to influence that experience.