I have a Sony KD-65X7500D tv and on demand hardly ever works. It plays the first ad but then just has the loading circle. I've emailed about this a couple of times but get a standard reply of we've passed this onto the technical team. It doesn't work on any of the available channels and it's the same for any program we try to watch. My TV is up to date and I did read on another post that there was an update available to download onto a USB but it wasn't for my model of TV. It's been like this for well over a month now and is super frustrating!!!
I think it comes down to the DRM protection on demand use.
You tube is free so don't bother with protection.
Netflix you have their own protection system and have obviously come to an arrangement with Sony.
Sony need to update their browser but they perhaps see on demand in NZ a small market not worth the effort.