Watch out! You are being brainwashed by a bunch of professional FUD-mongers who stand to make a lot of money if they can convince that there is something lacking about your current development environment. When people start going on about how .NET or J2EE is the future, try to pin them down to something specific that they think you need. Then calmly point them to the CPAN module that does that. If they say it's impossible to make a scalable web site without one of these, point them to sites that use a lot of Perl, like Yahoo or Google or Amazon. Then ask them to show you a site with similar traffic based on .NET or J2EE.
There will always be a lot of CTO types who think they need something like this. This is because they are idiots and they enjoy spending money. Try to ignore them.