I don't think it's possible, currently am working with VideoJS and you can set a variable to a property in Javascript to trigger an event or a listener that when the video ends, it should do something, and actually in this series: https://laracasts.com/series/how-to-use-html5-video-and-videojs Jeffrey talks about how Laracasts (at the time) was using VideoJS and they had that featured implemented, so it seems they want to keep it.
Im gonna take a wild guess and say that it is because Laracasts as many websites they tend to have a flow for how users are going to experience using the website, it could be useful to have a setting somewhere to turn that on and off, I agree but unless the Vimeo player allows it, and unless they decide that that is no longer going to be part of the "Laracasts experience" then I don't know, it's really up to them.
Has anyone worked with Vimeo player in their website? Is it possible to turn on/off an autoplay feature? By default most browsers would mute the video on autoplay so you have to tell it via Javascript to unmute the video, it's actually one of the things that im trying to do on a project but I can't get it done (VideoJS)