Going by the posts in the forums[1], it's more that BitKeeper has effectively ceased operations in terms of selling its system.

People have noted multiple times that its current build system is fairly hostile to packaging on *NIX, but nobody seems to be putting in the work and the time. I'm somewhat curious about BitKeeper, but not enough to make my first goal to go down into its guts (complete with a custom stdio from NetBSD with modifications!) to make it play nicely with my system.

[1] https://users.bitkeeper.org/t/thoughts-after-a-few-days-with...