The language developers were never really in a position to fix this problem. After all, in 2002 (the date of that Q&A), you could already deploy Perl or Python

The language developers were never really in a position to fix this problem. After all, in 2002 (the date of that Q&A), you could already deploy Perl or Python scripts by "simply uploading code to a directory", if mod_perl or mod_python was installed by the hosting provider. Coordination problems are difficult.