Damn good question. Why is Google proliferating so many programming languages? Go, Dart, Kotlin, Carbon, as well as many past failures.

It's like Google is forever chasing after the Holy Grail of programming languages.

Its like Google can't make up its mind what constitutes a good, multirole programming language that it can use in many different problem domains.

We don't need a frickin' Tower of Babel of programming languages.

Unfortunately, Google is so typical of software engineers who are never satisfied with the tools they have.

I'm a Smalltalk evangelist. Personally, I believe Smalltalk is good enough for nearly all purposes. It's extremely versatile. It's extremely flexible. It's extremely scalable. It's extremely productive. It's extremely easy to learn and use (even more so than Go!). One excellent, multirole language. This is as close as one can get to the Holy Grail.