How long you think until they dare take that away too?
For all intents and purposes, old.reddit.com is just like any third-party client. Vastly preferred by its users, harder to monetize or exert control over.
> harder to monetize
Honest question: how is old.reddit.com harder to monetize than 'new.reddit.com'? I've been seeing ads creep in over the past couple of years I think. (Not that I necessarily have any beef about that..)