One reason is that so many packages depend on them. Python and Perl is big in Fedora-based systems, for example. But even for the non-critical software, packag

One reason is that so many packages depend on them. Python and Perl is big in Fedora-based systems, for example. But even for the non-critical software, packaged WP needs PHP, packaged Vagrant needs Ruby etc. As for enterprise Linux, many customers relies on this packages, because they get reviewed and gets security patches on system updates.