According to a report from the Wall Street Journal website, YouTube.com is a one of biggest online video storage and streaming services that operated by Google. With millions of users and billions of views, but YouTube.com can’t even turn a profit.
The main reason that most people view videos through links, not directly come to YouTube.com (small percents) to view, thereby bypassing homepage ads.
Right now, Google is stuck with a big and popular online video website that isn’t actually help the company have any profit from it. Maybe, Google will add some new targeted advertisements to increase revenue, but not in the near future.