As a longtime user of Vimeo (since 2009), I was afraid this was going to happen. I built our own HLS video streaming in-house a couple of years ago and never looked back. Way faster, lightweight player, uses modern apis and codecs.
Now I'm working on productizing that at https://framerate.com/ (beta launches next week!)
Now I'm working on productizing that at https://framerate.com/ (beta launches next week!)