Knowledge worker and informal learning thoughts

I currently work at an older Insurance company as a business analyst. I won't mention the name because its not important for this post.

I have a fairly diverse technical background in Cobol, Unix, Java, and business analysis. I also keep track of trends in using the so called web 2.0 technologies. I also understand the potential benefit of using a wiki which considering other software (content management systems) is an inexpensive investment.

In asking about has our company thought of using a corporate wiki I get the response, "We don't do that here". But I interpret that response as "I don't think our people can learn that".

So does that mean the skill of a knowledge worker is judged by how well you can informally learn? Should companies start to judge the skill of an employee's abilities on how well he/she considers other means to share knowledge such as a wiki? If that were the case many of my co-workers who have been at the insurance company a long time are in desperate need of these new skill sets. Even though its understood that insurance companies typically lag behind other industries in technology implementation, a wiki doesn't require that much financial resources, only the ability to experiment, learn and share knowledge.