The key take-away here is that a business blog is and should be treated as another product. Then it is easy to see it must deliver value. To some degree I compare this to the millions of news sites out there. They all regurgitate the same news. You could go anywhere and read almost exactly the same thing. The truly interesting ones go beyond rewording an AP story by providing research, insight and analysis that users value.
I once spent a month creating and tweaking a country-specific tech news blog and realized that 85% of the tech news (in this other language) was regurgitated US tech news with, as you said, pretty much exactly the same info. Eventually, I put a stop to the blog because it wasn't something people were looking for (that is, translated, country-specific tech news).
