Well, the supermarkets know know what the effect of their product placement is. If they change it, the customer buys different things, on average. So, we can s

Well, the supermarkets know know what the effect of their product placement is. If they change it, the customer buys different things, on average. So, we can say it's reasonable for people to do some research and pick the yoghurt they consider best, but we know most people don't do that. And that supermarkets prefer to give the best spots to sugary yoghurts. What's wrong with doing the research once for the average person and then regulating the supermarkets so they give those the eye level space? People can still make different choices if they want.