alt Hacker News> If you already own OpenTTD on Steam, nothing changes. You’ll continue to receive game updates as usual. If you ever need to re-download the game, the game will remain in your Steam library.
This part of the announcement was nice, too. It would suck if existing users had it deleted from their libraries.
Steam is really good about that kind of thing. Not quite the same, but I have a couple of games on my account that haven't been sold on the store for years, and I can still download them any time. I don't think there's any way for publishers to really remove a game that's already been purchased.