They can trademark "Experiment.com", but if they really had a shot at a pronounceable four-letter domain name, that seems like a no-brainer.

From the article:

   It was just settling for a domain choice. In 40 years, 
   when I told my grandkids what I did, I shuddered at the 
   idea of telling them I worked at a company called ‘Ryza’.

Um, Denny, it's your job to make the name mean something. Why do you think your company was initially confused with Zynga?