However, it's a little hard to believe the show really is over. I mean, the whole Cara, Xan, and Duarte thread is setting up the next main plot. Why have all that in there if you're ending the series with the demise of Inaros? It doesn't make sense to leave it in there unless you believe the show's going to continue. Even if it was something that was decided after filming, etc. had been completed, why not edit out that stuff if you're not going to follow that plot to its conclusion in following seasons?
I'm hoping either Amazon changes its mind or someone else picks up the baton and finishes filming the rest of books (and is able to land all of the cast, of course).