They should gpl it, and release a torrent.
Distributing the software isn't the problem. There are already torrentable copies of the software.
The problem is that Slysoft were THE BEST at breaking optical media DRM. Every time Blu Rays came with a new AACS version (usually on huge blockbuster releases) Slysoft had it cracked within two weeks. Most everyone else in the industry then followed the path Slysoft blazed. The current version of their software won't unlock future disks.
If they aren't in operation anymore, then bye bye fair use of ripping discs you have bought to your mediaserver. Others will try to fill in the gap, but they frankly aren't as talented. And if Slysoft can be taken down that puts a target on Ripbot or Makemkv as well.
Heck I didn't even use Slysoft's tools but I paid the subscription to support the work, to support being able to copy my disks as I see fit. With them gone that paints a very bleak future for those of us who would rather roll our own on-demand system with Kodi or Plex vs paying for someone else's limited walled garden (Hulu, Netflix, etc.).
In fact I would go so far to assume that it might take years to crack 4K Blu Rays now that Slysoft is gone. Videophiles might actually have to slide back into the 1990's and manage disks if they want to get the best picture quality they can on their 4K tvs.
The end result will be more piracy, as that will be the only way to get digital copies of movies without DRM. Which then might paint a target on software like Plex/Kodi, as they won't have a legitimate use case (kinda like how the head shop claims all the pipes are to smoke tobacco). This could be the beginning of the end.