This review doesn't jive with the apparent performance of the company in the market. They're the front-runner in an extremely tough space with hostile partners, and even more amazingly, they did this while starting as a company that ships physical goods around the country. There aren't too many things that are harder than moving away from a successful business model, but they've done it really well.
They don't appear to be afraid to innovate at all. Hell, they even started making their own hardware (Roku).