Andreessen Horowitz’s shiny, new $15 billion reveals where the firm sees the biggest opportunities

Andreessen Horowitz just raised over $15 billion. 

I’ll let you consider that number for a moment, because while it’s far from unprecedented (or even surprising), it is quite a chunk of change. It’s also a reminder: The firm that first made its name as a VC upstart upon its 2009 founding has become venture capital’s most-talked-about and controversial brand. And I use the term brand intentionally: a16z made its name not only by investing in companies like Skype, Facebook, and Twitter...