Sea World determined their pirate ship was financially impractical to maintain, and yet it found new life in Victoria I believe.
Vekoma SLCs are regarded similarly to Boomerangs. The Expo 88 Titan (Constructed in 1987) found new life at Wonderland as The Demon ('92-'04), Alabama Adventure as Zoomerang ('05-'11) and currently resides at Wonderla Park in Hyderabad as Recoil since 2016. That's 33 years old, and it's most recent relocation was at age 29. And in this particular case, the track isn't 'bolt together' pieces - but physically welded together on-site. I think that is the case with Arkham also - so it can be done.
The problems with Arkham, as I understand them, involve a very costly and expensive control systems overhaul. Coupled with the new ride safety requirements for teardown maintenance, etc etc, it wasn't financially worth it for MW to continue to operate - however, in another jurisdiction where the requirements aren't so 'Australian', the control systems might be a really cheap cost to acquire - essentially - a brand new ride for some lucky small regional park.
Just as Dreamworld relocated Cyclone from Luna Park for next to nothing, there are many parks over the world that might consider purchasing Arkham. It's not outside the realm of possible for it to happen.
As @ATIpoints out, people are still building these things.