The "master quality" sounds great for videophiles, even if only a small percentage of content would actually make good use of it.
Most (all?) of the top channels on LBRY at the moment are using the Youtube sync features which gets the video from Youtube, so these won't be master upload quality.
Vimeo has long been the platform for filmmakers to showcase their videos in full resolution, and all of my videos on there are direct uploads of my master files. Again, not master quality on Vimeo either, but the compression is much less aggressive than Youtube.