The onus is on us to make sure that a future where we are locked out of the devices we own does not come to pass.
4k Bluray requires Kaby Lake or newer (I don't know whether it works on Ryzen or not) and HDMI 2.0a with HDCP 2.2.
1080p requires Internet Explorer, Edge, or Safari on Windows or MacOS¹.
4k in the webapp requires Edge in addition to the hardware requirements wolfgke lists.
1: https://help.netflix.com/en/node/23742
4k Bluray requires Kaby Lake or newer (I don't know whether it works on Ryzen or not) and HDMI 2.0a with HDCP 2.2.