In my experience, Google Play has just been awful for video. Their App offerings on platforms other than their own are also quite horrid, trying to use Play or Youtube on a Roku is just a nightmare. If their goal is to get you to switch to Android TV, for a better experience, they need to rethink their strategy because it's really just driving me away from their services.

The whole no Amazon Services on Google Hardware and no Google Services on Amazon Hardware does neither of them any benefit and only solidifies Roku's position as the dominant platform because it's the only one that's open.