I've tried both WordPress and Drupal, many times over, just to compare the two.

When I first started blogging, I looked at both Drupal and WordPress, and since then I stuck with WordPress. No matter how many times I try Drupal, I cannot convince myself to stick with Drupal at all.

As a beginner, I found WordPress much simpler than Drupal. Drupal may be more powerful in some aspects and types of websites, but as a beginner, I found it hard to learn Drupal. And that is the reason I think that Drupal feels they are losing out. New people try Drupal, and are daunted with overcoming the obstacle it provides.

An installation as easy as WordPress may make it easier for people to get involved in Drupal. Creating a sample post, page and comment on installation might help Drupal as well.

I am a big fan of WordPress, however I totally agree with what some have said over at Drupal.org in that it isn't beginner friendly. To encourage people to stay and help out, you need to grab them as beginners, and WordPress does that much better than Drupal does.