If you're looking to buy shoes, why should the organic results for [your favorite model] (likely wikipedia, the brand website, etc.) be better than ads?
That's exactly my point. I was responding to the parent's suggestion that "Google should simply deliver the best results, no matter what algorithm they use to do so." In the scenario you describe, the best results would be the stores (for example) where you would buy those shoes.
Remember, organic doesn't have to mean non-commercial. In fact, if I search for best buy, the first organic result is bestbuy.com
It is obvious that the best organic result for a nav query like [best buy] is bestbuy.com. The issue is with queries like [some product], should it show amazon first? or bestbuy? or some local reseller?
Remember, organic doesn't have to mean non-commercial. In fact, if I search for best buy, the first organic result is bestbuy.com