We enabled HTTP2 in 2015 on the $big_financial_news_site. We had some influential JS people that were very keen to roll it out (they mostly ended up fastly afte

We enabled HTTP2 in 2015 on the $big_financial_news_site. We had some influential JS people that were very keen to roll it out (they mostly ended up fastly after). I did warn that it would degrade all but the high bandwidth experience. It took a long time for them to "understand" the data, and that HTTP2 was not very useful, especially when compared the impact of changing CDN, or optimising for CDN caching.