>I suspect they could have simply rewritten with the same language, engineered it better and applied all the lessons learned No, you can't do that. There are m

>I suspect they could have simply rewritten with the same language, engineered it better and applied all the lessons learned No, you can't do that. There are many benefits that come from underlying technology choices that you can't backport to old stack, and if you try, you'd create a monster nobody would like to touch. There might be fewer developers willing to work with Elm than something else, there are none willing to work with "we rewrote javascript standard libraries so that it kind of resembles Elm, but poorly".