The Web has hit a point where tracking pageviews is useless for startups.
There was a time when all you needed to succeed on the Internet were lots and lots of eyeballs, and the best way of measuring those eyeballs was by tracking pageviews (measuring exactly which pages on a website are viewed by individual visitors). The dot-com crash showed us that the eyeball-based business model was a failure.
Since then, startups have moved toward direct monetization strategies such as subscriptions and virtual goods - and these businesses using these strategies require very different metrics than an advertising-based business would.
Make no mistake, pageviews were valuable metric once, but their time has passed.