besnette - 3:24 pm on Jul 5, 2013 (gmt 0)
Treeline, I see your point, however, supermarkets and stores have much more space that people are willing to look - most people go up and down each aisle until they find what they are looking for, or to investigate different offerings. It's fun to find a local product that is tasty and delicious, and I can because although all of those "pepsi, General mills etc" products are represented, some of which I like, but other local or smaller brands have a fair shake too. Whole Foods does a really nice job at featuring lesser-known, quality offerings.
Search engines, most people will only stay in one aisle (page 1), so if you forced supermarket shoppers to only look at 'these two shelves" or if by nature, that is all they will do, and everything on those two shelves were mostly by the same company, that company would prevail hands down. We all know that most people don't go much deeper than page 1 or two in serps. In a supermarket, people will spend a lot more time looking around.
The other point in here is that Pepsi, for example does have diversity and a widely varied product line, which is great and legit. What we are talking about in this thread trying to dominate serps with different domains, owned by the same person, targeting the exact same thing (query) and offering very little if anything different on each domain.