Java programmers commenting on this story seem to be claiming that Ruby is a messy language and hard to grow a team around, while Java somehow solves all these problems, yet I see only anecdotal evidence and opinion to back this claim up.

One thing I cant remember ever having read is a horror story about people taking over a legacy Rails app, while those stories seem to be fairly common when talking about Java apps.

Seems to me that, for the most part, people who know Ruby and Rails have taught themselves, while sub-par and mediocre Java programmers are produced in their hundreds, fresh from their first programming experience in college.

Seems logical to me then that its going to be far easier to get experienced Ruby programmers than to get experienced Java programmers.