The matter of branding is not actually very new in terms of having websites optimized and domains promoted and this has been previously noticed in some shopping areas on Google as well. For example, even in the past for a lot of niches and shopping-related markets, when you searched Google, you could find links to Amazon among the other top-performing internet sites, even if the pages did not have lots of incoming links, nor were all of them properly optimized but the power of brands helped them.
A similar case would be Wikipedia, no wonder in nearly all queries you perform and searches you do you find some links of that portal, even the ones that just have a couple of links compared with the other heavily promoted sites. If you maintain a website, apparently one that has lots of original, unique contents and your homepage acts like a brand online, favored by a lot of people, many of your internal pages too will have great chances of having satisfactory spots on web engines.