[SaxonRobber]

Go succeeded because it was largely ignored by Google. Dart was the darling language which flipped miserably and has only recently became relevant.

[pjmlp]

Dart's relevancy is heavily dependent on Flutter's success.

Seeing how Chrome team pushes for PWAs, Android team woke up and is now delivering JetPack Composer, and we still don't know what is going to happen with Fuchsia, the question remains.