Okay. It's not Google's goal to provide the absolute best answer. They just want to avoid a wrong answer while providing an acceptable answer for a majority of searchers. Google has over-valued authority domains at the cost of smaller sites/blogs that have rich/deep/narrow content. Faking an authority domain is difficult using black-hat seo techniques so it's the sledge hammer that Google uses today. So yes, big sites are rewarded and the little guys are locked out if they try and compete.