The problem isn't marketing. The problem simply is we have done nothing new and solid for years now. Yes there is Moose and all that Modern Perl movement. But I can tell you Modern Perl was all about catching up with others.
I respectively disagree. The problem is entirely marketing.
Is Moose attracting new Perl programmers? Is Perl 6? Hardly. At best these are finding new life for 'existing' Perl programmers, and a very small subset at that. It' preaching to the choir.
The kids setting their fresh new brains on learning Python, PHP or what ever flavour of the week, are flocking to them because marketing hype is telling them that's were all the other cool kids are. Not because say, Python just released a 'new version X'.
Perl 6 will never be anything more than that 25 year old legacy language our parents use. Not without marketing to make it cool again.