Interesting you bring up Roku as a main comparison, as only the Roku Ultra device has AV1 support and that is via DASH only:

https://developer.roku.com/dev/docs/media

So if you are saying Roku has 43% of the market, I would consider that as support for my point that AV1 is not that widely supported.

Very fair. Looks like Amazon is a bit better with AV1 support starting in 2021 with the Fire TV Stick 4k Max - 1st Gen[0], with a single absense of it on the seemingly uber-budget friendly $35 "Fire TV Stick HD Alexa Voice Remote (2024)".

That's still a sliver of the market, but the more royalty-free* codecs we use, the better.

0: https://developer.amazon.com/docs/device-specs/device-specif...

*: https://arstechnica.com/gadgets/2026/03/av1s-open-royalty-fr...