> The number of people posting on YouTube, Facebook, Twitter, etc. is well beyond their ability to perfectly QA the content they host.

> If either were forced to be responsible for their products [...] the number of competitors and choices we would have would be remarkably less.

These seem a bit contradictory. You're saying that not taking responsibility gives these huge companies, companies that have heavily consolidated the media market through acquisition, the ability to become the size that they are. But you're also saying without that protection, the market would be more consolidated.