If you're using a "common browser" on Linux (Firefox/Chrome) Netflix should work, just at 720p for most of the content. If you're using a minor Chromium based fork the customized Chromium package provided by your distro it probably doesn't have Widevine by default.

The same is true for running a vanilla Chromium build on Windows, the big difference is the quality of content you can get on Windows can be higher than 720p in the mainstream browsers (as long as the rest of the system is compliant as well).