Depends how K3's story turns out.
You could argue the same points about the movies, where ANH seemed like it should have been a one shot deal. I mean, at the end of the movie the bad guys were defeated, the Death Star destroyed. That's how K1 ended.
But then in ESB we saw that the conflict had only really just begun, same as what we saw in K2.
You can argue perhaps that they didn't implement it as well in the KOTOR series as it was done in the movies, but I don't think you can make the blanket statement you did especially when a)K1 and K2 share so many similarities to ANH and ESB, and b)you don't know how well K3 will wrap up the saga.