[gribbly]

>We're probably not going to see AV1 implementations on the same level as x264 for at least a few years.

True, on that note, over at the Doom9 forums, the x265 spokesperson there said that they will consider making a AV1 encoder should there be a market.

Given the massive amount of support gathered for AV1 from web and hardware giants, and how it's a royalty free codec and thus in a great position to be the next generation 'de facto' video standard on the web, I'd wager there is a good market for a third party encoder from excellent developers like those behind x265.