@sement They dont bury it for the sake of predators, they do it as part of the social etiquette with other cats.

Cats mark territory both through urine and poop which have scent markers on it. Dominant cats wont bury their poop as a way to mark territory. The submissive cats will bury their poop so as not to mark a territory and thus remain submissive to the alpha.

The reason domestic cats bury their poop is mostly because you re their alpha and they consider themselves as being submissive to you and in your territory. Well that and domestic cats have probably lost some of the instincts that wild cats have, so it might be a bit more random for domestic cats and mean less than it would for a wild cat.