Here are the first two sentences of 世界の中心から愛をさけぶ:
朝、目がさめると泣いていた。いつものことだ。
And turning to a random page in リング the first copula I came across was だ (not in quoted speech).
In my admittedly limited reading experience, I've gotten the impression that だ is the norm, but that である crops up from time to time for variety or to make particularly complicated sentences clearer.