And serving it tends to be "copy the files to your web server's public dir".
PHP's success and Perl's decline was obvious at the time.
One of the few insights in the blog post that aren't stupid, fake, inconsistent and schizophrenic, is the one about PHP's common approach regarding spinning up new processes.
PHP has a much bigger legacy of web stuff than Perl, because it was so much easier to use. But there's no future in it. Wordpress, Drupal, Joomla... all had their time but it's all in the past.
RoR helped Ruby push off its inevitable demise for a while, but it's going the same way as Perl. Python got lucky that it's become the defacto choice for everything ML.