In my own experience, cats left to their own devices do not tend to establish independent territories for solitary existence. Even when there is space to spread out, domestic cats tend to cluster in loose groups, females often helping rear each other’s kittens in commumal nests, while males come and go visiting the group in a recurring pattern.

There was a documentary, perhaps from the 1990s with very good footage of a group of barn cats on a large dairy farm in England. But in any case, the idea that domestic cats are solitary creatures is old science.