Google has an immense amount of Java code, in addition to all the Java programmers it took to write them, a good number of whom are programmers that have written Java for their entire professional careers.
If the bar for getting away from it is rewriting millions of lines of code and retraining 1/3 - 1/2 of their engineers, it seems credible to me.
If the bar for getting away from it is rewriting millions of lines of code and retraining 1/3 - 1/2 of their engineers, it seems credible to me.