Most of small companies don't use Java Enterprise Edition, even if few thousands guys need to access an application at the same time, even if the application needs to support transactions, to be scalable, etc. They already have deployed "medium to big" successful applications using Tomcat and J2SE, so why bother?
It's difficult to find very young people(less than 30) which have a J2EE knowledge. You don't learn J2EE in a technical school, you don't learn it at University and you probably won't learn it by working in a small company. IMHO, the general opinion about J2EE is that "It's interesting, looks complicated too... and I probably don't need it, (solo talking it's probably worth not my time and my salary learning it.)". When in a small company a guy has a good J2EE working knowledge, there is probably a big chance, that he's the only one who will create and deploy enterprise applications and hopefully transfer all his knowledge to others someday.
I looked only once at Java Enterprise Edition few years ago. Going by the book, and doing few examples, I was able to get started using notepad and standard Java tools. The experience was painful with Corba, RMI, etc. Few days ago, I had a look at JavaEE 5. It looks nice and quite simple. However it seems that most businesses are still using EJB 2.1 and not 3.0.
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