The subreddit is theirs on the tech side, but by nature of US Copyright law as pushed for by much bigger beasts than Reddit the content is not thiers they simply have a licence to use it, a licence which can be revoked at any time due to the lack of 'consideration' (payment).

Even the fundamentals of a sub, the topic title rules etc are copyright if the mod who wrote them, not of Reddit.

And since large scale changes are required to negate copyright there's little chance any extant sub could remain of the mods and users of that sub chose to revoke the licence.

Right?

Surely mods / users < 1 so that equation shouldn't surprise anyone.