There's currently only one non-game for the Switch. Niconico, Japan's largest video site, has an app that just launched this week. But that's a good sign that apps for others like YouTube and Netflix may follow.
Nintendo stated around the time of the console's launch that they wanted to focus first on making it a great gaming device and that other uses (web browser, video streaming, etc.) could follow eventually. It's a good choice, because secondary features are nice to have but not system-sellers. Most people already have multiple ways to watch Netflix on their TV and don't need another anyway, and a web browser on a game console's never going to rival the browser on a general purpose device like a Mac or iPad.