Again, success isn't measured by marketshare, but profitability and growth. Vimeo has 15% of the embedded market by domain, and has managed to be profitable.

Even in your article it talks about how Youtube isn't exactly profitable, and is dragging down Google's average CPC for the business.

A massive difference indeed, but by any other standard, $100 million is not bad at all.

This isn't a good comparison. Netflix, Twitch, Snapchat, Facebook/Instagram are.