Yes, but it is a shame. German language (and others) shouldn't have to miss out on cultural growth just because English is more popular. Authors not being able to eat is a problem.
Do you think if there were more German language books being written, an audience for those books would develop? Is it just a chicken and egg problem?
Don't know. Seems like a lot of work to learn a language for a certain genre, but it's entirely possible. (I've been interested in learning Polish for this reason).
not to mention, writing in english means being unable to use a host of things that other languages have (and viceversa, of course).