Why?

In a puzzling piece of news, Les Miz creators Boublil and Schonberg announced that they are already at work on a new musical, before The Pirate Queen has even had a chance to ground itself on Broadway. This begs the question, why? I would think they would want to see how PQ is going to play out before trying again. After Martin Guerre and now PQ, it's obvious they need to rethink their creation process. Interestingly, both of them will be tackling the book and lyrics with a new collaborator writing the music. I would think it should be the other way around. The music has always been their strong point, lyrics not so much. Working in their favor though is a return to their bread and butter by updating a classic. It looks like they're updating La Traviata to WWII. I'm skeptical but intrigued. Hopefully it won't take another 18 years to get this one up and running.