The future of Blockland is all in good hands, and I'm pretty sure nothing's going downhill from here.
At one point in the future, Man of Reason will probably give up his quest to destroy Blockland, and someone will find a new way to replace RTB. And this Steam "failure" isn't much of a failure because honestly were getting more new users than ever before.
Plus, we still have a very dedicated community that loves this game, and even if we start to lose some users, there's still a lot of users who won't leave this game anytime soon.