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Others have shown up and take the same approach, Graal and Zippy for example.

I've never heard of those. Python on the other hand has been my primary professional language for years. i.e. people pay me to program in python.

See how PyPy might be a tinsy bit more relevant / meaningful to professional developers.

Java developers know them quite well. In fact Java 9 is getting a plugin API for Graal.