Forget about Ethereum for a minute. In the case of Wikipedia, no single company can produce the amount of content that they have on Wikipedia, especially with that reasonable standard of quality. Why is that? Wikipedia has a decentralized culture where principles are the main driver of decisions that are made. Wikipedia's collective Administrators, Bureaucrats, and Stewards do not compose a top-down management structure. It was not easy to do, requiring strong community outreach, culture building, and hard work. It is unlikely to be repeatable in the same fashion given that most Internet users feel they can find what they need online (the innovator in me disagrees with that sentiment, and I am very much aware that my opinion is a minority).
Ethereum, in my mind, is merely a way to help automate, standardize, and enforce similar systems. If it can be achieved without any sort of blockchain, like in the case of Wikipedia, then great. But perhaps the barrier to doing so is just out of reach without the help of the technology. Yes, having a central authority decide who is credible is exactly bad for the Internet, and Ethereum is a possible means to facilitate alternatives. What other alternatives would there be?
Ethereum, in my mind, is merely a way to help automate, standardize, and enforce similar systems. If it can be achieved without any sort of blockchain, like in the case of Wikipedia, then great. But perhaps the barrier to doing so is just out of reach without the help of the technology. Yes, having a central authority decide who is credible is exactly bad for the Internet, and Ethereum is a possible means to facilitate alternatives. What other alternatives would there be?