I would assume that they will license the technology.
(Also note that "bankruptcy" does not necessarily mean "totally out of business".)
It also seems to me that part of the reason why Auro3D never caught on was that it wanted a different speaker layout.
This makes it impossible to survive in a market where others who dominate that market require different layouts.
(You're asking listeners to commit to your product - and in return sacrifice performance when using more popular products.)
However, since most of the positive things I heard actually regarded upmixing, perhaps the Auro3D Upmixer will continue as a separate product.
It could have potential as a licensed third-party upmixer...
Or for use by studios to remaster existing stereo content...
Or to streaming services... as an option to be included in their client software...
(Or maybe someone like Apple or Microsoft will purchase it...)