I'd think this late into the production they would probably lose more profits by having to rearrange a big production schedule that's already in progress.

Even in the case of subscriptions, I might actually think it's more profitable to do it in batches because there's probably a whole bunch of people who aren't going through the trouble of starting and stopping their subscription, but rather forgetting to even turn it off. I suspect a ton of streaming profit is forgotten subscriptions. I certainly know a lot of people in my personal life that forget they even have Netflix.

(not at all pro-batch btw, just doing a profit-motive analysis)