As for C, sure, AT&T is so much better than FAANG. C++ was also heavyly corporate. Python won over Ruby because of FAANG support (I personally like Ruby more, but as it's not supported by big companies, it remained behind in deep learning for example). Also NVIDIA has great Python support, which is really important for high performance software development.

As for Perl, I just look at it as a stepping stone for more modern scripting languages.