Sam here: Great question. Victoria and I were talking about it offline. On the one hand the Theranos story was a product of tremendous journalism.

With that said, a lot of it has to do with building up knowledge around finance, markets, regulation, policy etc. That takes time and commitment to the profession. The other thing to remember is that the media landscape's wider and thinner than it was when there were multiple daily papers competing for the same market. Markets are much larger, but journalism's shrunk. Time and investment is the only way that improves.