Competition in the market is not a theory.
Google can be brought down. Look at Duck Duck Go. Bing. Both viable alternatives to Google.
Once a utility platform such as Google or Facebook has been established it’s impossible to compete.
They are NOT a utility in the traditional sense that requires state regulation. All they are in the end is a website. That's it. There's already a good alternative to FB called mewe.com, and I'm considering nuking my FB account and switching over.
Bing is Microsoft. Microsoft has unlimited money to pump into Bing. Bing has been around “competing” for ten years. It has 1% of the market. Next.